doc: Remove note about temporary file from release notes

About time, before tagging final. Tree-SHA512: d54d77a501d227183be7b136025e5ac5e883cd140867368aa552aae89680d536f35f7619f58506069b083c7f718506d42f871fb95e2dcb76ab01cd2159c664be
doc: Update release notes from wiki for rc3
2026-01-28 19:06:14 +01:00 · 2018-02-22 20:20:48 +01:00 · 2018-02-15 23:32:28 +01:00 · 2018-02-15 23:04:45 +01:00 · 2018-02-15 22:38:14 +01:00 · 2018-02-15 22:38:12 +01:00
1330 changed files with 204137 additions and 92476 deletions
--- a/.github/ISSUE_TEMPLATE.md
+++ b/.github/ISSUE_TEMPLATE.md
@@ -0,0 +1,21 @@
+<!-- This issue tracker is only for technical issues related to Bitcoin Core.
+
+General bitcoin questions and/or support requests are best directed to the Bitcoin StackExchange at https://bitcoin.stackexchange.com.
+
+For reporting security issues, please read instructions at https://bitcoincore.org/en/contact/.
+
+If the node is "stuck" during sync or giving "block checksum mismatch" errors, please ensure your hardware is stable by running memtest and observe CPU temperature with a load-test tool such as linpack before creating an issue! -->
+
+<!-- Describe the issue -->
+<!--- What behavior did you expect? -->
+
+<!--- What was the actual behavior (provide screenshots if the issue is GUI-related)? -->
+
+<!--- How reliably can you reproduce the issue, what are the steps to do so? -->
+
+<!-- What version of Bitcoin Core are you using, where did you get it (website, self-compiled, etc)? -->
+
+<!-- What type of machine are you observing the error on (OS/CPU and disk type)? -->
+
+<!-- Any extra information that might be useful in the debugging process. -->
+<!--- This is normally the contents of a `debug.log` or `config.log` file. Raw text or a link to a pastebin type site are preferred. -->
--- a/.gitignore
+++ b/.gitignore
@@ -6,6 +6,7 @@ src/bitcoind
 src/bitcoin-cli
 src/bitcoin-tx
 src/test/test_bitcoin
+src/test/test_bitcoin_fuzzy
 src/qt/test/test_bitcoin-qt

 # autoreconf
@@ -43,6 +44,12 @@ src/qt/forms/ui_*.h

 src/qt/test/moc*.cpp

+src/qt/bitcoin-qt.config
+src/qt/bitcoin-qt.creator
+src/qt/bitcoin-qt.creator.user
+src/qt/bitcoin-qt.files
+src/qt/bitcoin-qt.includes
+
 .deps
 .dirstamp
 .libs
@@ -55,7 +62,6 @@ src/qt/test/moc*.cpp
 *.o
 *.o-*
 *.patch
-.bitcoin
 *.a
 *.pb.cc
 *.pb.h
@@ -76,11 +82,11 @@ src/qt/test/moc*.cpp
 Makefile
 bitcoin-qt
 Bitcoin-Qt.app
+background.tiff*

 # Unit-tests
 Makefile.test
 bitcoin-qt_test
-src/test/buildenv.py

 # Resources cpp
 qrc_*.cpp
@@ -101,16 +107,12 @@ coverage_percent.txt
 linux-coverage-build
 linux-build
 win32-build
-qa/pull-tester/run-bitcoind-for-test.sh
-qa/pull-tester/tests_config.py
-qa/pull-tester/cache/*
-qa/pull-tester/test.*/*
-qa/tmp
-cache/
-share/BitcoindComparisonTool.jar
+test/config.ini
+test/cache/*

 !src/leveldb*/Makefile

 /doc/doxygen/

 libbitcoinconsensus.pc
+contrib/devtools/split-debug.sh
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,74 +1,86 @@
-# errata:
-# - A travis bug causes caches to trample eachother when using the same
-#   compiler key (which we don't use anyway). This is worked around for now by
-#   replacing the "compilers" with a build name prefixed by the no-op ":"
-#   command. See: https://github.com/travis-ci/travis-ci/issues/4393
-
+sudo: required
+dist: trusty
 os: linux
-language: cpp
-compiler: gcc
+language: minimal
+cache:
+  directories:
+  - depends/built
+  - depends/sdk-sources
+  - $HOME/.ccache
+git:
+  depth: false  # full clone for git subtree check, this works around issue #12388
 env:
  global:
    - MAKEJOBS=-j3
    - RUN_TESTS=false
+    - CHECK_DOC=0
    - BOOST_TEST_RANDOM=1$TRAVIS_BUILD_ID
    - CCACHE_SIZE=100M
    - CCACHE_TEMPDIR=/tmp/.ccache-temp
    - CCACHE_COMPRESS=1
    - BASE_OUTDIR=$TRAVIS_BUILD_DIR/out
    - SDK_URL=https://bitcoincore.org/depends-sources/sdks
-    - PYTHON_DEBUG=1
    - WINEDEBUG=fixme-all
-cache:
-  apt: true
-  directories:
-  - depends/built
-  - depends/sdk-sources
-  - $HOME/.ccache
-matrix:
-  fast_finish: true
-  include:
-    - compiler: ": ARM"
-      env: HOST=arm-linux-gnueabihf PACKAGES="g++-arm-linux-gnueabihf" DEP_OPTS="NO_QT=1" GOAL="install" BITCOIN_CONFIG="--enable-glibc-back-compat --enable-reduce-exports"
-    - compiler: ": Win32"
-      env: HOST=i686-w64-mingw32 PPA="ppa:ubuntu-wine/ppa" PACKAGES="nsis gcc-mingw-w64-i686 g++-mingw-w64-i686 binutils-mingw-w64-i686 mingw-w64-dev wine1.7 bc" RUN_TESTS=true GOAL="deploy" BITCOIN_CONFIG="--enable-gui --enable-reduce-exports" MAKEJOBS="-j2"
-    - compiler: ": 32-bit + dash"
-      env: HOST=i686-pc-linux-gnu PACKAGES="g++-multilib bc python-zmq" PPA="ppa:chris-lea/zeromq" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-zmq --enable-glibc-back-compat --enable-reduce-exports LDFLAGS=-static-libstdc++" USE_SHELL="/bin/dash"
-    - compiler: ": Win64"
-      env: HOST=x86_64-w64-mingw32 PPA="ppa:ubuntu-wine/ppa" PACKAGES="nsis gcc-mingw-w64-x86-64 g++-mingw-w64-x86-64 binutils-mingw-w64-x86-64 mingw-w64-dev wine1.7 bc" RUN_TESTS=true GOAL="deploy" BITCOIN_CONFIG="--enable-gui --enable-reduce-exports" MAKEJOBS="-j2"
-    - compiler: ": bitcoind"
-      env: HOST=x86_64-unknown-linux-gnu PACKAGES="bc python-zmq" PPA="ppa:chris-lea/zeromq" DEP_OPTS="NO_QT=1 NO_UPNP=1 DEBUG=1" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-zmq --enable-glibc-back-compat --enable-reduce-exports CPPFLAGS=-DDEBUG_LOCKORDER"
-    - compiler: ": No wallet"
-      env: HOST=x86_64-unknown-linux-gnu DEP_OPTS="NO_WALLET=1" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-glibc-back-compat --enable-reduce-exports"
-    - compiler: ": Cross-Mac"
-      env: HOST=x86_64-apple-darwin11 PACKAGES="cmake libcap-dev libz-dev libbz2-dev" BITCOIN_CONFIG="--enable-reduce-exports" OSX_SDK=10.9 GOAL="deploy"
-  exclude:
-    - compiler: gcc
+  matrix:
+# ARM
+    - HOST=arm-linux-gnueabihf PACKAGES="g++-arm-linux-gnueabihf python3-pip" DEP_OPTS="NO_QT=1" CHECK_DOC=1 GOAL="install" BITCOIN_CONFIG="--enable-glibc-back-compat --enable-reduce-exports"
+# Win32
+    - HOST=i686-w64-mingw32 DPKG_ADD_ARCH="i386" DEP_OPTS="NO_QT=1" PACKAGES="python3 nsis g++-mingw-w64-i686 wine1.6" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-reduce-exports"
+# Qt4 & system libs
+    - HOST=x86_64-unknown-linux-gnu PACKAGES="python3-zmq qt4-dev-tools libssl-dev libevent-dev bsdmainutils libboost-system-dev libboost-filesystem-dev libboost-chrono-dev libboost-program-options-dev libboost-test-dev libboost-thread-dev libdb5.1++-dev libminiupnpc-dev libzmq3-dev libprotobuf-dev protobuf-compiler libqrencode-dev xvfb" NO_DEPENDS=1 NEED_XVFB=1 RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-zmq --with-incompatible-bdb --enable-glibc-back-compat --enable-reduce-exports --with-gui=qt4 CPPFLAGS=-DDEBUG_LOCKORDER"
+# 32-bit + dash
+    - HOST=i686-pc-linux-gnu PACKAGES="g++-multilib python3-zmq" DEP_OPTS="NO_QT=1" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-zmq --enable-glibc-back-compat --enable-reduce-exports LDFLAGS=-static-libstdc++" USE_SHELL="/bin/dash"
+# Win64
+    - HOST=x86_64-w64-mingw32 DPKG_ADD_ARCH="i386" DEP_OPTS="NO_QT=1" PACKAGES="python3 nsis g++-mingw-w64-x86-64 wine1.6" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-reduce-exports"
+# x86_64 Linux (uses qt5 dev package instead of depends Qt to speed up build and avoid timeout)
+    - HOST=x86_64-unknown-linux-gnu PACKAGES="python3-zmq qtbase5-dev qttools5-dev-tools protobuf-compiler libdbus-1-dev libharfbuzz-dev" DEP_OPTS="NO_QT=1 NO_UPNP=1 DEBUG=1 ALLOW_HOST_PACKAGES=1" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-zmq --with-gui=qt5 --enable-glibc-back-compat --enable-reduce-exports CPPFLAGS=-DDEBUG_LOCKORDER"
+# x86_64 Linux, No wallet
+    - HOST=x86_64-unknown-linux-gnu PACKAGES="python3" DEP_OPTS="NO_WALLET=1" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-glibc-back-compat --enable-reduce-exports"
+# Cross-Mac
+    - HOST=x86_64-apple-darwin11 PACKAGES="cmake imagemagick libcap-dev librsvg2-bin libz-dev libbz2-dev libtiff-tools python-dev" BITCOIN_CONFIG="--enable-gui --enable-reduce-exports --enable-werror" OSX_SDK=10.11 GOAL="deploy"
+
+before_install:
+    - export PATH=$(echo $PATH | tr ':' "\n" | sed '/\/opt\/python/d' | tr "\n" ":" | sed "s|::|:|g")
 install:
-    - if [ -n "$PACKAGES" ]; then sudo rm -f /etc/apt/sources.list.d/travis_ci_zeromq3-source.list; fi
-    - if [ -n "$PPA" ]; then travis_retry sudo add-apt-repository "$PPA" -y; fi
+    - if [ -n "$DPKG_ADD_ARCH" ]; then sudo dpkg --add-architecture "$DPKG_ADD_ARCH" ; fi
    - if [ -n "$PACKAGES" ]; then travis_retry sudo apt-get update; fi
    - if [ -n "$PACKAGES" ]; then travis_retry sudo apt-get install --no-install-recommends --no-upgrade -qq $PACKAGES; fi
+    - if [ "$CHECK_DOC" = 1 -a "$TRAVIS_EVENT_TYPE" = "pull_request" ]; then travis_retry pip3 install flake8 --user; fi
 before_script:
+    - if [ "$CHECK_DOC" = 1 -a "$TRAVIS_EVENT_TYPE" = "pull_request" ]; then contrib/devtools/commit-script-check.sh $TRAVIS_COMMIT_RANGE; fi
+    - if [ "$CHECK_DOC" = 1 ]; then contrib/devtools/git-subtree-check.sh src/crypto/ctaes; fi
+    - if [ "$CHECK_DOC" = 1 ]; then contrib/devtools/git-subtree-check.sh src/secp256k1; fi
+    - if [ "$CHECK_DOC" = 1 ]; then contrib/devtools/git-subtree-check.sh src/univalue; fi
+    - if [ "$CHECK_DOC" = 1 ]; then contrib/devtools/git-subtree-check.sh src/leveldb; fi
+    - if [ "$CHECK_DOC" = 1 ]; then contrib/devtools/check-doc.py; fi
+    - if [ "$CHECK_DOC" = 1 ]; then contrib/devtools/check-rpc-mappings.py .; fi
+    - if [ "$CHECK_DOC" = 1 -a "$TRAVIS_EVENT_TYPE" = "pull_request" ]; then contrib/devtools/lint-all.sh; fi
    - unset CC; unset CXX
    - mkdir -p depends/SDKs depends/sdk-sources
-    - if [ -n "$OSX_SDK" -a ! -f depends/sdk-sources/MacOSX${OSX_SDK}.sdk.tar.gz ]; then wget $SDK_URL/MacOSX${OSX_SDK}.sdk.tar.gz -O depends/sdk-sources/MacOSX${OSX_SDK}.sdk.tar.gz; fi
+    - if [ -n "$OSX_SDK" -a ! -f depends/sdk-sources/MacOSX${OSX_SDK}.sdk.tar.gz ]; then curl --location --fail $SDK_URL/MacOSX${OSX_SDK}.sdk.tar.gz -o depends/sdk-sources/MacOSX${OSX_SDK}.sdk.tar.gz; fi
    - if [ -n "$OSX_SDK" -a -f depends/sdk-sources/MacOSX${OSX_SDK}.sdk.tar.gz ]; then tar -C depends/SDKs -xf depends/sdk-sources/MacOSX${OSX_SDK}.sdk.tar.gz; fi
-    - make $MAKEJOBS -C depends HOST=$HOST $DEP_OPTS
+    - if [ -z "$NO_DEPENDS" ]; then make $MAKEJOBS -C depends HOST=$HOST $DEP_OPTS; fi
+    # Start xvfb if needed, as documented at https://docs.travis-ci.com/user/gui-and-headless-browsers/#Using-xvfb-to-Run-Tests-That-Require-a-GUI
+    - if [ "$NEED_XVFB" = 1 ]; then export DISPLAY=:99.0; /sbin/start-stop-daemon --start --pidfile /tmp/custom_xvfb_99.pid --make-pidfile --background --exec /usr/bin/Xvfb -- :99 -ac; fi
 script:
+    - if [ "$CHECK_DOC" = 1 -a "$TRAVIS_REPO_SLUG" = "bitcoin/bitcoin" -a "$TRAVIS_PULL_REQUEST" = "false" ]; then while read LINE; do travis_retry gpg --keyserver hkp://subset.pool.sks-keyservers.net --recv-keys $LINE; done < contrib/verify-commits/trusted-keys; fi
+    - if [ "$CHECK_DOC" = 1 -a "$TRAVIS_REPO_SLUG" = "bitcoin/bitcoin" -a "$TRAVIS_PULL_REQUEST" = "false" ]; then contrib/verify-commits/verify-commits.sh; fi
+    - export TRAVIS_COMMIT_LOG=`git log --format=fuller -1`
    - if [ -n "$USE_SHELL" ]; then export CONFIG_SHELL="$USE_SHELL"; fi
    - OUTDIR=$BASE_OUTDIR/$TRAVIS_PULL_REQUEST/$TRAVIS_JOB_NUMBER-$HOST
    - BITCOIN_CONFIG_ALL="--disable-dependency-tracking --prefix=$TRAVIS_BUILD_DIR/depends/$HOST --bindir=$OUTDIR/bin --libdir=$OUTDIR/lib"
-    - depends/$HOST/native/bin/ccache --max-size=$CCACHE_SIZE
-    - if [ "$TRAVIS_PULL_REQUEST" != "false" ]; then export CCACHE_READONLY=1; fi
+    - if [ -z "$NO_DEPENDS" ]; then depends/$HOST/native/bin/ccache --max-size=$CCACHE_SIZE; fi
    - test -n "$USE_SHELL" && eval '"$USE_SHELL" -c "./autogen.sh"' || ./autogen.sh
-    - ./configure --cache-file=config.cache $BITCOIN_CONFIG_ALL $BITCOIN_CONFIG || ( cat config.log && false)
-    - make distdir PACKAGE=bitcoin VERSION=$HOST
+    - mkdir build && cd build
+    - ../configure --cache-file=config.cache $BITCOIN_CONFIG_ALL $BITCOIN_CONFIG || ( cat config.log && false)
+    - make distdir VERSION=$HOST
    - cd bitcoin-$HOST
    - ./configure --cache-file=../config.cache $BITCOIN_CONFIG_ALL $BITCOIN_CONFIG || ( cat config.log && false)
    - make $MAKEJOBS $GOAL || ( echo "Build failure. Verbose build follows." && make $GOAL V=1 ; false )
    - export LD_LIBRARY_PATH=$TRAVIS_BUILD_DIR/depends/$HOST/lib
-    - if [ "$RUN_TESTS" = "true" ]; then make check; fi
-    - if [ "$RUN_TESTS" = "true" ]; then qa/pull-tester/rpc-tests.py --coverage; fi
+    - if [ "$RUN_TESTS" = "true" ]; then travis_wait 30 make $MAKEJOBS check VERBOSE=1; fi
+    - if [ "$TRAVIS_EVENT_TYPE" = "cron" ]; then extended="--extended --exclude feature_pruning,feature_dbcrash"; fi
+    - if [ "$RUN_TESTS" = "true" ]; then test/functional/test_runner.py --combinedlogslen=4000 --coverage --quiet ${extended}; fi
 after_script:
-    - if [ "$TRAVIS_PULL_REQUEST" != "false" ]; then (echo "Upload goes here. Something like: scp -r $BASE_OUTDIR server" || echo "upload failed"); fi
+    - echo $TRAVIS_COMMIT_RANGE
+    - echo $TRAVIS_COMMIT_LOG
--- a/.tx/config
+++ b/.tx/config
@@ -1,7 +1,7 @@
 [main]
 host = https://www.transifex.com

-[bitcoin.qt-translation-012x]
+[bitcoin.qt-translation-016x]
 file_filter = src/qt/locale/bitcoin_<lang>.ts
 source_file = src/qt/locale/bitcoin_en.ts
 source_lang = en
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1,108 +1,283 @@
 Contributing to Bitcoin Core
 ============================

-The Bitcoin Core project operates an open contributor model where anyone is welcome to contribute towards development in the form of peer review, testing and patches. This document explains the practical process and guidelines for contributing.
+The Bitcoin Core project operates an open contributor model where anyone is
+welcome to contribute towards development in the form of peer review, testing
+and patches. This document explains the practical process and guidelines for
+contributing.

-Firstly in terms of structure, there is no particular concept of “Core developers” in the sense of privileged people. Open source often naturally revolves around meritocracy where longer term contributors gain more trust from the developer community. However, some hierarchy is necessary for practical purposes. As such there are repository “maintainers” who are responsible for merging pull requests as well as a “lead maintainer” who is responsible for the release cycle, overall merging, moderation and appointment of maintainers.
+Firstly in terms of structure, there is no particular concept of "Core
+developers" in the sense of privileged people. Open source often naturally
+revolves around meritocracy where longer term contributors gain more trust from
+the developer community. However, some hierarchy is necessary for practical
+purposes. As such there are repository "maintainers" who are responsible for
+merging pull requests as well as a "lead maintainer" who is responsible for the
+release cycle, overall merging, moderation and appointment of maintainers.


 Contributor Workflow
 --------------------

-The codebase is maintained using the “contributor workflow” where everyone without exception contributes patch proposals using “pull requests”. This facilitates social contribution, easy testing and peer review.
+The codebase is maintained using the "contributor workflow" where everyone
+without exception contributes patch proposals using "pull requests". This
+facilitates social contribution, easy testing and peer review.

 To contribute a patch, the workflow is as follows:

-  - Fork repository
-  - Create topic branch
-  - Commit patches
+  1. Fork repository
+  1. Create topic branch
+  1. Commit patches

-The project coding conventions in [doc/developer-notes.md](doc/developer-notes.md) must be adhered to.
+The project coding conventions in the [developer notes](doc/developer-notes.md)
+must be adhered to.

-In general [commits should be atomic](https://en.wikipedia.org/wiki/Atomic_commit#Atomic_commit_convention) and diffs should be easy to read. For this reason do not mix any formatting fixes or code moves with actual code changes.
+In general [commits should be atomic](https://en.wikipedia.org/wiki/Atomic_commit#Atomic_commit_convention)
+and diffs should be easy to read. For this reason do not mix any formatting
+fixes or code moves with actual code changes.

-Commit messages should be verbose by default consisting of a short subject line (50 chars max), a blank line and detailed explanatory text as separate paragraph(s); unless the title alone is self-explanatory (like "Corrected typo in main.cpp") then a single title line is sufficient. Commit messages should be helpful to people reading your code in the future, so explain the reasoning for your decisions. Further explanation [here](http://chris.beams.io/posts/git-commit/).
+Commit messages should be verbose by default consisting of a short subject line
+(50 chars max), a blank line and detailed explanatory text as separate
+paragraph(s), unless the title alone is self-explanatory (like "Corrected typo
+in init.cpp") in which case a single title line is sufficient. Commit messages should be
+helpful to people reading your code in the future, so explain the reasoning for
+your decisions. Further explanation [here](http://chris.beams.io/posts/git-commit/).

-If a particular commit references another issue, please add the reference, for example "refs #1234", or "fixes #4321". Using "fixes or closes" keywords will cause the corresponding issue to be closed when the pull request is merged.
+If a particular commit references another issue, please add the reference. For
+example: `refs #1234` or `fixes #4321`. Using the `fixes` or `closes` keywords
+will cause the corresponding issue to be closed when the pull request is merged.

-Please refer to the [Git manual](https://git-scm.com/doc) for more information about Git.
+Please refer to the [Git manual](https://git-scm.com/doc) for more information
+about Git.

  - Push changes to your fork
  - Create pull request

-The title of the pull request should be prefixed by the component or area that the pull request affects. Examples:
+The title of the pull request should be prefixed by the component or area that
+the pull request affects. Valid areas as:
+
+  - *Consensus* for changes to consensus critical code
+  - *Docs* for changes to the documentation
+  - *Qt* for changes to bitcoin-qt
+  - *Mining* for changes to the mining code
+  - *Net* or *P2P* for changes to the peer-to-peer network code
+  - *RPC/REST/ZMQ* for changes to the RPC, REST or ZMQ APIs
+  - *Scripts and tools* for changes to the scripts and tools
+  - *Tests* for changes to the bitcoin unit tests or QA tests
+  - *Trivial* should **only** be used for PRs that do not change generated
+    executable code. Notably, refactors (change of function arguments and code
+    reorganization) and changes in behavior should **not** be marked as trivial.
+    Examples of trivial PRs are changes to:
+    - comments
+    - whitespace
+    - variable names
+    - logging and messages
+  - *Utils and libraries* for changes to the utils and libraries
+  - *Wallet* for changes to the wallet code
+
+Examples:

    Consensus: Add new opcode for BIP-XXXX OP_CHECKAWESOMESIG
    Net: Automatically create hidden service, listen on Tor
    Qt: Add feed bump button
-    Trivial: fix typo
+    Trivial: Fix typo in init.cpp

-If a pull request is specifically not to be considered for merging (yet) please prefix the title with [WIP] or use [Tasks Lists](https://github.com/blog/1375-task-lists-in-gfm-issues-pulls-comments) in the body of the pull request to indicate tasks are pending.
+Note that translations should not be submitted as pull requests, please see
+[Translation Process](https://github.com/bitcoin/bitcoin/blob/master/doc/translation_process.md) 
+for more information on helping with translations.

-The body of the pull request should contain enough description about what the patch does together with any justification/reasoning. You should include references to any discussions (for example other tickets or mailing list discussions).
+If a pull request is not to be considered for merging (yet), please
+prefix the title with [WIP] or use [Tasks Lists](https://help.github.com/articles/basic-writing-and-formatting-syntax/#task-lists)
+in the body of the pull request to indicate tasks are pending.

-At this stage one should expect comments and review from other contributors. You can add more commits to your pull request by committing them locally and pushing to your fork until you have satisfied all feedback. If your pull request is accepted for merging, you may be asked by a maintainer to squash and or rebase your commits before it will be merged. The length of time required for peer review is unpredictable and will vary from patch to patch.
+The body of the pull request should contain enough description about what the
+patch does together with any justification/reasoning. You should include
+references to any discussions (for example other tickets or mailing list
+discussions).
+
+At this stage one should expect comments and review from other contributors. You
+can add more commits to your pull request by committing them locally and pushing
+to your fork until you have satisfied all feedback.
+
+Squashing Commits
+---------------------------
+If your pull request is accepted for merging, you may be asked by a maintainer
+to squash and or [rebase](https://git-scm.com/docs/git-rebase) your commits
+before it will be merged. The basic squashing workflow is shown below.
+
+    git checkout your_branch_name
+    git rebase -i HEAD~n
+    # n is normally the number of commits in the pull
+    # set commits from 'pick' to 'squash', save and quit
+    # on the next screen, edit/refine commit messages
+    # save and quit
+    git push -f # (force push to GitHub)
+
+If you have problems with squashing (or other workflows with `git`), you can
+alternatively enable "Allow edits from maintainers" in the right GitHub
+sidebar and ask for help in the pull request.
+
+Please refrain from creating several pull requests for the same change.
+Use the pull request that is already open (or was created earlier) to amend
+changes. This preserves the discussion and review that happened earlier for
+the respective change set.
+
+The length of time required for peer review is unpredictable and will vary from
+pull request to pull request.


 Pull Request Philosophy
 -----------------------

-Patchsets should always be focused. For example, a pull request could add a feature, fix a bug, or refactor code; but not a mixture. Please also avoid super pull requests which attempt to do too much, are overly large, or overly complex as this makes review difficult.
+Patchsets should always be focused. For example, a pull request could add a
+feature, fix a bug, or refactor code; but not a mixture. Please also avoid super
+pull requests which attempt to do too much, are overly large, or overly complex
+as this makes review difficult.


-###Features
+### Features

-When adding a new feature, thought must be given to the long term technical debt and maintenance that feature may require after inclusion. Before proposing a new feature that will require maintenance, please consider if you are willing to maintain it (including bug fixing). If features get orphaned with no maintainer in the future, they may be removed by the Repository Maintainer.
+When adding a new feature, thought must be given to the long term technical debt
+and maintenance that feature may require after inclusion. Before proposing a new
+feature that will require maintenance, please consider if you are willing to
+maintain it (including bug fixing). If features get orphaned with no maintainer
+in the future, they may be removed by the Repository Maintainer.


-###Refactoring
+### Refactoring

-Refactoring is a necessary part of any software project's evolution. The following guidelines cover refactoring pull requests for the project.
+Refactoring is a necessary part of any software project's evolution. The
+following guidelines cover refactoring pull requests for the project.

-There are three categories of refactoring, code only moves, code style fixes, code refactoring. In general refactoring pull requests should not mix these three kinds of activity in order to make refactoring pull requests easy to review and uncontroversial. In all cases, refactoring PRs must not change the behaviour of code within the pull request (bugs must be preserved as is).
+There are three categories of refactoring, code only moves, code style fixes,
+code refactoring. In general refactoring pull requests should not mix these
+three kinds of activity in order to make refactoring pull requests easy to
+review and uncontroversial. In all cases, refactoring PRs must not change the
+behaviour of code within the pull request (bugs must be preserved as is).

-Project maintainers aim for a quick turnaround on refactoring pull requests, so where possible keep them short, uncomplex and easy to verify. 
+Project maintainers aim for a quick turnaround on refactoring pull requests, so
+where possible keep them short, uncomplex and easy to verify.
+
+Pull requests that refactor the code should not be made by new contributors. It
+requires a certain level of experience to know where the code belongs to and to
+understand the full ramification (including rebase effort of open pull requests).
+
+Trivial pull requests or pull requests that refactor the code with no clear
+benefits may be immediately closed by the maintainers to reduce unnecessary
+workload on reviewing.


 "Decision Making" Process
 -------------------------

-The following applies to code changes to the Bitcoin Core project (and related projects such as libsecp256k1), and is not to be confused with overall Bitcoin Network Protocol consensus changes.
+The following applies to code changes to the Bitcoin Core project (and related
+projects such as libsecp256k1), and is not to be confused with overall Bitcoin
+Network Protocol consensus changes.

-Whether a pull request is merged into Bitcoin Core rests with the project merge maintainers and ultimately the project lead. 
+Whether a pull request is merged into Bitcoin Core rests with the project merge
+maintainers and ultimately the project lead.

-Maintainers will take into consideration if a patch is in line with the general principles of the project; meets the minimum standards for inclusion; and will judge the general consensus of contributors.
+Maintainers will take into consideration if a patch is in line with the general
+principles of the project; meets the minimum standards for inclusion; and will
+judge the general consensus of contributors.

 In general, all pull requests must:

-  - have a clear use case, fix a demonstrable bug or serve the greater good of the project (for example refactoring for modularisation);
-  - be well peer reviewed;
-  - have unit tests and functional tests where appropriate;
-  - follow code style guidelines;
-  - not break the existing test suite;
-  - where bugs are fixed, where possible, there should be unit tests demonstrating the bug and also proving the fix. This helps prevent regression.
+  - Have a clear use case, fix a demonstrable bug or serve the greater good of
+    the project (for example refactoring for modularisation);
+  - Be well peer reviewed;
+  - Have unit tests and functional tests where appropriate;
+  - Follow code style guidelines ([C++](doc/developer-notes.md), [functional tests](test/functional/README.md));
+  - Not break the existing test suite;
+  - Where bugs are fixed, where possible, there should be unit tests
+    demonstrating the bug and also proving the fix. This helps prevent regression.

-Patches that change Bitcoin consensus rules are considerably more involved than normal because they affect the entire ecosystem and so must be preceded by extensive mailing list discussions and have a numbered BIP. While each case will be different, one should be prepared to expend more time and effort than for other kinds of patches because of increased peer review and consensus building requirements.
+Patches that change Bitcoin consensus rules are considerably more involved than
+normal because they affect the entire ecosystem and so must be preceded by
+extensive mailing list discussions and have a numbered BIP. While each case will
+be different, one should be prepared to expend more time and effort than for
+other kinds of patches because of increased peer review and consensus building
+requirements.


-###Peer Review
+### Peer Review

-Anyone may participate in peer review which is expressed by comments in the pull request. Typically reviewers will review the code for obvious errors, as well as test out the patch set and opine on the technical merits of the patch. Project maintainers take into account the peer review when determining if there is consensus to merge a pull request (remember that discussions may have been spread out over github, mailing list and IRC discussions). The following language is used within pull-request comments:
+Anyone may participate in peer review which is expressed by comments in the pull
+request. Typically reviewers will review the code for obvious errors, as well as
+test out the patch set and opine on the technical merits of the patch. Project
+maintainers take into account the peer review when determining if there is
+consensus to merge a pull request (remember that discussions may have been
+spread out over GitHub, mailing list and IRC discussions). The following
+language is used within pull-request comments:

  - ACK means "I have tested the code and I agree it should be merged";
-  - NACK means "I disagree this should be merged", and must be accompanied by sound technical justification. NACKs without accompanying reasoning may be disregarded;
-  - utACK means "I have not tested the code, but I have reviewed it and it looks OK, I agree it can be merged";
+  - NACK means "I disagree this should be merged", and must be accompanied by
+    sound technical justification (or in certain cases of copyright/patent/licensing
+    issues, legal justification). NACKs without accompanying reasoning may be
+    disregarded;
+  - utACK means "I have not tested the code, but I have reviewed it and it looks
+    OK, I agree it can be merged";
  - Concept ACK means "I agree in the general principle of this pull request";
  - Nit refers to trivial, often non-blocking issues.

-Project maintainers reserve the right to weigh the opinions of peer reviewers using common sense judgement and also may weight based on meritocracy: Those that have demonstrated a deeper commitment and understanding towards the project (over time) or have clear domain expertise may naturally have more weight, as one would expect in all walks of life.
+Reviewers should include the commit hash which they reviewed in their comments.

-Where a patch set affects consensus critical code, the bar will be set much higher in terms of discussion and peer review requirements, keeping in mind that mistakes could be very costly to the wider community. This includes refactoring of consensus critical code.
+Project maintainers reserve the right to weigh the opinions of peer reviewers
+using common sense judgement and also may weight based on meritocracy: Those
+that have demonstrated a deeper commitment and understanding towards the project
+(over time) or have clear domain expertise may naturally have more weight, as
+one would expect in all walks of life.

-Where a patch set proposes to change the Bitcoin consensus, it must have been discussed extensively on the mailing list and IRC, be accompanied by a widely discussed BIP and have a generally widely perceived technical consensus of being a worthwhile change based on the judgement of the maintainers.
+Where a patch set affects consensus critical code, the bar will be set much
+higher in terms of discussion and peer review requirements, keeping in mind that
+mistakes could be very costly to the wider community. This includes refactoring
+of consensus critical code.
+
+Where a patch set proposes to change the Bitcoin consensus, it must have been
+discussed extensively on the mailing list and IRC, be accompanied by a widely
+discussed BIP and have a generally widely perceived technical consensus of being
+a worthwhile change based on the judgement of the maintainers.
+
+### Finding Reviewers
+
+As most reviewers are themselves developers with their own projects, the review
+process can be quite lengthy, and some amount of patience is required. If you find
+that you've been waiting for a pull request to be given attention for several
+months, there may be a number of reasons for this, some of which you can do something
+about:
+
+  - It may be because of a feature freeze due to an upcoming release. During this time,
+    only bug fixes are taken into consideration. If your pull request is a new feature,
+    it will not be prioritized until the release is over. Wait for release.
+  - It may be because the changes you are suggesting do not appeal to people. Rather than
+    nits and critique, which require effort and means they care enough to spend time on your
+    contribution, thundering silence is a good sign of widespread (mild) dislike of a given change
+    (because people don't assume *others* won't actually like the proposal). Don't take
+    that personally, though! Instead, take another critical look at what you are suggesting
+    and see if it: changes too much, is too broad, doesn't adhere to the
+    [developer notes](doc/developer-notes.md), is dangerous or insecure, is messily written, etc.
+    Identify and address any of the issues you find. Then ask e.g. on IRC if someone could give
+    their opinion on the concept itself.
+  - It may be because your code is too complex for all but a few people. And those people
+    may not have realized your pull request even exists. A great way to find people who
+    are qualified and care about the code you are touching is the
+    [Git Blame feature](https://help.github.com/articles/tracing-changes-in-a-file/). Simply
+    find the person touching the code you are touching before you and see if you can find
+    them and give them a nudge. Don't be incessant about the nudging though.
+  - Finally, if all else fails, ask on IRC or elsewhere for someone to give your pull request
+    a look. If you think you've been waiting an unreasonably long amount of time (month+) for
+    no particular reason (few lines changed, etc), this is totally fine. Try to return the favor
+    when someone else is asking for feedback on their code, and universe balances out.


 Release Policy
 --------------

 The project leader is the release manager for each Bitcoin Core release.
+
+Copyright
+---------
+
+By contributing to this repository, you agree to license your work under the 
+MIT license unless specified otherwise in `contrib/debian/copyright` or at 
+the top of the file itself. Any work contributed where you are not the original 
+author must contain its license header with the original author(s) and source.
--- a/3
+++ b/3
@@ -1,6 +1,7 @@
 The MIT License (MIT)

-Copyright (c) 2009-2015 The Bitcoin Core developers
+Copyright (c) 2009-2018 The Bitcoin Core developers
+Copyright (c) 2009-2018 Bitcoin Developers

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
--- a/5
+++ b/5
@@ -1,5 +0,0 @@
-Building Bitcoin
-
-See doc/build-*.md for instructions on building bitcoind,
-the intended-for-services, no-graphical-interface, reference
-implementation of Bitcoin.
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -0,0 +1,5 @@
+Building Bitcoin
+================
+
+See doc/build-*.md for instructions on building the various
+elements of the Bitcoin Core reference implementation of Bitcoin.
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,60 +1,75 @@
+# Copyright (c) 2013-2016 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 ACLOCAL_AMFLAGS = -I build-aux/m4
 SUBDIRS = src
+if ENABLE_MAN
+SUBDIRS += doc/man
+endif
 .PHONY: deploy FORCE

-GZIP_ENV="-9n"
+export PYTHONPATH

 if BUILD_BITCOIN_LIBS
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = libbitcoinconsensus.pc
 endif

-BITCOIND_BIN=$(top_builddir)/src/bitcoind$(EXEEXT)
-BITCOIN_QT_BIN=$(top_builddir)/src/qt/bitcoin-qt$(EXEEXT)
-BITCOIN_CLI_BIN=$(top_builddir)/src/bitcoin-cli$(EXEEXT)
+BITCOIND_BIN=$(top_builddir)/src/$(BITCOIN_DAEMON_NAME)$(EXEEXT)
+BITCOIN_QT_BIN=$(top_builddir)/src/qt/$(BITCOIN_GUI_NAME)$(EXEEXT)
+BITCOIN_CLI_BIN=$(top_builddir)/src/$(BITCOIN_CLI_NAME)$(EXEEXT)
 BITCOIN_WIN_INSTALLER=$(PACKAGE)-$(PACKAGE_VERSION)-win$(WINDOWS_BITS)-setup$(EXEEXT)

+empty :=
+space := $(empty) $(empty)
+
 OSX_APP=Bitcoin-Qt.app
-OSX_DMG=Bitcoin-Core.dmg
+OSX_VOLNAME = $(subst $(space),-,$(PACKAGE_NAME))
+OSX_DMG = $(OSX_VOLNAME).dmg
+OSX_BACKGROUND_SVG=background.svg
 OSX_BACKGROUND_IMAGE=background.tiff
+OSX_BACKGROUND_IMAGE_DPIS=36 72
+OSX_DSSTORE_GEN=$(top_srcdir)/contrib/macdeploy/custom_dsstore.py
 OSX_DEPLOY_SCRIPT=$(top_srcdir)/contrib/macdeploy/macdeployqtplus
 OSX_FANCY_PLIST=$(top_srcdir)/contrib/macdeploy/fancy.plist
-OSX_BASE_LPROJ_DIR=$(top_srcdir)/contrib/macdeploy/Base.lproj/InfoPlist.strings
 OSX_INSTALLER_ICONS=$(top_srcdir)/src/qt/res/icons/bitcoin.icns
-OSX_PLIST=$(top_srcdir)/share/qt/Info.plist #not installed
+OSX_PLIST=$(top_builddir)/share/qt/Info.plist #not installed
 OSX_QT_TRANSLATIONS = da,de,es,hu,ru,uk,zh_CN,zh_TW

 DIST_DOCS = $(wildcard doc/*.md) $(wildcard doc/release-notes/*.md)
+DIST_CONTRIB = $(top_srcdir)/contrib/bitcoin-cli.bash-completion \
+	       $(top_srcdir)/contrib/bitcoin-tx.bash-completion \
+	       $(top_srcdir)/contrib/bitcoind.bash-completion \
+	       $(top_srcdir)/contrib/init \
+	       $(top_srcdir)/contrib/install_db4.sh \
+	       $(top_srcdir)/contrib/rpm
+DIST_SHARE = \
+  $(top_srcdir)/share/genbuild.sh \
+  $(top_srcdir)/share/rpcauth
+
+BIN_CHECKS=$(top_srcdir)/contrib/devtools/symbol-check.py \
+           $(top_srcdir)/contrib/devtools/security-check.py

 WINDOWS_PACKAGING = $(top_srcdir)/share/pixmaps/bitcoin.ico \
  $(top_srcdir)/share/pixmaps/nsis-header.bmp \
  $(top_srcdir)/share/pixmaps/nsis-wizard.bmp \
  $(top_srcdir)/doc/README_windows.txt

-OSX_PACKAGING = $(OSX_DEPLOY_SCRIPT) $(OSX_FANCY_PLIST) $(OSX_INSTALLER_ICONS) $(OSX_BASE_LPROJ_DIR) \
-  $(top_srcdir)/contrib/macdeploy/$(OSX_BACKGROUND_IMAGE) \
-  $(top_srcdir)/contrib/macdeploy/DS_Store \
+OSX_PACKAGING = $(OSX_DEPLOY_SCRIPT) $(OSX_FANCY_PLIST) $(OSX_INSTALLER_ICONS) \
+  $(top_srcdir)/contrib/macdeploy/$(OSX_BACKGROUND_SVG) \
+  $(OSX_DSSTORE_GEN) \
  $(top_srcdir)/contrib/macdeploy/detached-sig-apply.sh \
  $(top_srcdir)/contrib/macdeploy/detached-sig-create.sh

-COVERAGE_INFO = baseline_filtered_combined.info baseline.info block_test.info \
-  leveldb_baseline.info test_bitcoin_filtered.info total_coverage.info \
-  baseline_filtered.info block_test_filtered.info rpc_test.info rpc_test_filtered.info \
-  leveldb_baseline_filtered.info test_bitcoin_coverage.info test_bitcoin.info
+COVERAGE_INFO = baseline.info \
+  test_bitcoin_filtered.info total_coverage.info \
+  baseline_filtered.info functional_test.info functional_test_filtered.info \
+  test_bitcoin_coverage.info test_bitcoin.info

 dist-hook:
-	-$(MAKE) -C $(top_distdir)/src/leveldb clean
-	-$(MAKE) -C $(top_distdir)/src/secp256k1 distclean
 	-$(GIT) archive --format=tar HEAD -- src/clientversion.cpp | $(AMTAR) -C $(top_distdir) -xf -

-distcheck-hook:
-	$(MKDIR_P) $(top_distdir)/_build/src/leveldb
-	cp -rf $(top_srcdir)/src/leveldb/* $(top_distdir)/_build/src/leveldb/
-	-$(MAKE) -C $(top_distdir)/_build/src/leveldb clean
-
-distcleancheck:
-	@:
-
 $(BITCOIN_WIN_INSTALLER): all-recursive
 	$(MKDIR_P) $(top_builddir)/release
 	STRIPPROG="$(STRIP)" $(INSTALL_STRIP_PROGRAM) $(BITCOIND_BIN) $(top_builddir)/release
@@ -64,9 +79,6 @@ $(BITCOIN_WIN_INSTALLER): all-recursive
 	  echo error: could not build $@
 	@echo built $@

-$(if $(findstring src/,$(MAKECMDGOALS)),$(MAKECMDGOALS), none): FORCE
-	$(MAKE) -C src $(patsubst src/%,%,$@)
-
 $(OSX_APP)/Contents/PkgInfo:
 	$(MKDIR_P) $(@D)
 	@echo "APPL????" > $@
@@ -87,17 +99,27 @@ $(OSX_APP)/Contents/MacOS/Bitcoin-Qt: $(BITCOIN_QT_BIN)
 	$(MKDIR_P) $(@D)
 	STRIPPROG="$(STRIP)" $(INSTALL_STRIP_PROGRAM)  $< $@

-$(OSX_APP)/Contents/Resources/Base.lproj/InfoPlist.strings: $(OSX_BASE_LPROJ_DIR)
+$(OSX_APP)/Contents/Resources/Base.lproj/InfoPlist.strings:
 	$(MKDIR_P) $(@D)
-	$(INSTALL_DATA) $< $@
+	echo '{	CFBundleDisplayName = "$(PACKAGE_NAME)"; CFBundleName = "$(PACKAGE_NAME)"; }' > $@

 OSX_APP_BUILT=$(OSX_APP)/Contents/PkgInfo $(OSX_APP)/Contents/Resources/empty.lproj \
  $(OSX_APP)/Contents/Resources/bitcoin.icns $(OSX_APP)/Contents/Info.plist \
  $(OSX_APP)/Contents/MacOS/Bitcoin-Qt $(OSX_APP)/Contents/Resources/Base.lproj/InfoPlist.strings

+osx_volname:
+	echo $(OSX_VOLNAME) >$@
+
 if BUILD_DARWIN
-$(OSX_DMG): $(OSX_APP_BUILT) $(OSX_PACKAGING)
-	$(OSX_DEPLOY_SCRIPT) $(OSX_APP) -add-qt-tr $(OSX_QT_TRANSLATIONS) -translations-dir=$(QT_TRANSLATION_DIR) -dmg -fancy $(OSX_FANCY_PLIST) -verbose 2
+$(OSX_DMG): $(OSX_APP_BUILT) $(OSX_PACKAGING) $(OSX_BACKGROUND_IMAGE)
+	$(PYTHON) $(OSX_DEPLOY_SCRIPT) $(OSX_APP) -add-qt-tr $(OSX_QT_TRANSLATIONS) -translations-dir=$(QT_TRANSLATION_DIR) -dmg -fancy $(OSX_FANCY_PLIST) -verbose 2 -volname $(OSX_VOLNAME)
+
+$(OSX_BACKGROUND_IMAGE).png: contrib/macdeploy/$(OSX_BACKGROUND_SVG)
+	sed 's/PACKAGE_NAME/$(PACKAGE_NAME)/' < "$<" | $(RSVG_CONVERT) -f png -d 36 -p 36 -o $@
+$(OSX_BACKGROUND_IMAGE)@2x.png: contrib/macdeploy/$(OSX_BACKGROUND_SVG)
+	sed 's/PACKAGE_NAME/$(PACKAGE_NAME)/' < "$<" | $(RSVG_CONVERT) -f png -d 72 -p 72 -o $@
+$(OSX_BACKGROUND_IMAGE): $(OSX_BACKGROUND_IMAGE).png $(OSX_BACKGROUND_IMAGE)@2x.png
+	tiffutil -cathidpicheck $^ -out $@

 deploydir: $(OSX_DMG)
 else
@@ -111,16 +133,20 @@ $(APP_DIST_DIR)/Applications:
 $(APP_DIST_EXTRAS): $(APP_DIST_DIR)/$(OSX_APP)/Contents/MacOS/Bitcoin-Qt

 $(OSX_DMG): $(APP_DIST_EXTRAS)
-	$(GENISOIMAGE) -no-cache-inodes -D -l -probe -V "Bitcoin-Core" -no-pad -r -dir-mode 0755 -apple -o $@ dist
+	$(GENISOIMAGE) -no-cache-inodes -D -l -probe -V "$(OSX_VOLNAME)" -no-pad -r -dir-mode 0755 -apple -o $@ dist

-$(APP_DIST_DIR)/.background/$(OSX_BACKGROUND_IMAGE): contrib/macdeploy/$(OSX_BACKGROUND_IMAGE)
+dpi%.$(OSX_BACKGROUND_IMAGE): contrib/macdeploy/$(OSX_BACKGROUND_SVG)
+	sed 's/PACKAGE_NAME/$(PACKAGE_NAME)/' < "$<" | $(RSVG_CONVERT) -f png -d $* -p $* | $(IMAGEMAGICK_CONVERT) - $@
+OSX_BACKGROUND_IMAGE_DPIFILES := $(foreach dpi,$(OSX_BACKGROUND_IMAGE_DPIS),dpi$(dpi).$(OSX_BACKGROUND_IMAGE))
+$(APP_DIST_DIR)/.background/$(OSX_BACKGROUND_IMAGE): $(OSX_BACKGROUND_IMAGE_DPIFILES)
 	$(MKDIR_P) $(@D)
-	$(INSTALL) $< $@
-$(APP_DIST_DIR)/.DS_Store: contrib/macdeploy/DS_Store
-	$(INSTALL) $< $@
+	$(TIFFCP) -c none $(OSX_BACKGROUND_IMAGE_DPIFILES) $@
+
+$(APP_DIST_DIR)/.DS_Store: $(OSX_DSSTORE_GEN)
+	$(PYTHON) $< "$@" "$(OSX_VOLNAME)"

 $(APP_DIST_DIR)/$(OSX_APP)/Contents/MacOS/Bitcoin-Qt: $(OSX_APP_BUILT) $(OSX_PACKAGING)
-	INSTALLNAMETOOL=$(INSTALLNAMETOOL)  OTOOL=$(OTOOL) STRIP=$(STRIP) $(OSX_DEPLOY_SCRIPT) $(OSX_APP) -translations-dir=$(QT_TRANSLATION_DIR) -add-qt-tr $(OSX_QT_TRANSLATIONS) -verbose 2
+	INSTALLNAMETOOL=$(INSTALLNAMETOOL)  OTOOL=$(OTOOL) STRIP=$(STRIP) $(PYTHON) $(OSX_DEPLOY_SCRIPT) $(OSX_APP) -translations-dir=$(QT_TRANSLATION_DIR) -add-qt-tr $(OSX_QT_TRANSLATIONS) -verbose 2

 deploydir: $(APP_DIST_EXTRAS)
 endif
@@ -143,81 +169,114 @@ $(BITCOIN_CLI_BIN): FORCE
 	$(MAKE) -C src $(@F)

 if USE_LCOV
+LCOV_FILTER_PATTERN=-p "/usr/include/" -p "src/leveldb/" -p "src/bench/" -p "src/univalue" -p "src/crypto/ctaes" -p "src/secp256k1"

 baseline.info:
 	$(LCOV) -c -i -d $(abs_builddir)/src -o $@

 baseline_filtered.info: baseline.info
-	$(LCOV) -r $< "/usr/include/*" -o $@
+	$(abs_builddir)/contrib/filter-lcov.py $(LCOV_FILTER_PATTERN) $< $@
+	$(LCOV) -a $@ $(LCOV_OPTS) -o $@

-leveldb_baseline.info: baseline_filtered.info
-	$(LCOV) -c -i -d $(abs_builddir)/src/leveldb -b $(abs_builddir)/src/leveldb -o $@
-
-leveldb_baseline_filtered.info: leveldb_baseline.info
-	$(LCOV) -r $< "/usr/include/*" -o $@
-
-baseline_filtered_combined.info: leveldb_baseline_filtered.info baseline_filtered.info
-	$(LCOV) -a leveldb_baseline_filtered.info -a baseline_filtered.info -o $@
-
-test_bitcoin.info: baseline_filtered_combined.info
+test_bitcoin.info: baseline_filtered.info
 	$(MAKE) -C src/ check
-	$(LCOV) -c -d $(abs_builddir)/src -t test_bitcoin -o $@
-	$(LCOV) -z -d $(abs_builddir)/src
-	$(LCOV) -z -d $(abs_builddir)/src/leveldb
+	$(LCOV) -c $(LCOV_OPTS) -d $(abs_builddir)/src -t test_bitcoin -o $@
+	$(LCOV) -z $(LCOV_OPTS) -d $(abs_builddir)/src

 test_bitcoin_filtered.info: test_bitcoin.info
-	$(LCOV) -r $< "/usr/include/*" -o $@
+	$(abs_builddir)/contrib/filter-lcov.py $(LCOV_FILTER_PATTERN) $< $@
+	$(LCOV) -a $@ $(LCOV_OPTS) -o $@

-block_test.info: test_bitcoin_filtered.info
-	$(MKDIR_P) qa/tmp
-	-@TIMEOUT=15 qa/pull-tester/run-bitcoind-for-test.sh $(JAVA) -jar $(JAVA_COMPARISON_TOOL) qa/tmp/compTool $(COMPARISON_TOOL_REORG_TESTS)
-	$(LCOV) -c -d $(abs_builddir)/src --t BitcoinJBlockTest -o $@
-	$(LCOV) -z -d $(abs_builddir)/src
-	$(LCOV) -z -d $(abs_builddir)/src/leveldb
+functional_test.info: test_bitcoin_filtered.info
+	-@TIMEOUT=15 test/functional/test_runner.py $(EXTENDED_FUNCTIONAL_TESTS)
+	$(LCOV) -c $(LCOV_OPTS) -d $(abs_builddir)/src --t functional-tests -o $@
+	$(LCOV) -z $(LCOV_OPTS) -d $(abs_builddir)/src

-block_test_filtered.info: block_test.info
-	$(LCOV) -r $< "/usr/include/*" -o $@
+functional_test_filtered.info: functional_test.info
+	$(abs_builddir)/contrib/filter-lcov.py $(LCOV_FILTER_PATTERN) $< $@
+	$(LCOV) -a $@ $(LCOV_OPTS) -o $@

-rpc_test.info: test_bitcoin_filtered.info
-	-@TIMEOUT=15 python qa/pull-tester/rpc-tests.py $(EXTENDED_RPC_TESTS)
-	$(LCOV) -c -d $(abs_builddir)/src --t rpc-tests -o $@
-	$(LCOV) -z -d $(abs_builddir)/src
-	$(LCOV) -z -d $(abs_builddir)/src/leveldb
+test_bitcoin_coverage.info: baseline_filtered.info test_bitcoin_filtered.info
+	$(LCOV) -a $(LCOV_OPTS) baseline_filtered.info -a test_bitcoin_filtered.info -o $@

-rpc_test_filtered.info: rpc_test.info
-	$(LCOV) -r $< "/usr/include/*" -o $@
-
-test_bitcoin_coverage.info: baseline_filtered_combined.info test_bitcoin_filtered.info
-	$(LCOV) -a baseline_filtered.info -a leveldb_baseline_filtered.info -a test_bitcoin_filtered.info -o $@
-
-total_coverage.info: baseline_filtered_combined.info test_bitcoin_filtered.info block_test_filtered.info rpc_test_filtered.info
-	$(LCOV) -a baseline_filtered.info -a leveldb_baseline_filtered.info -a test_bitcoin_filtered.info -a block_test_filtered.info -a rpc_test_filtered.info -o $@ | $(GREP) "\%" | $(AWK) '{ print substr($$3,2,50) "/" $$5 }' > coverage_percent.txt
+total_coverage.info: test_bitcoin_filtered.info functional_test_filtered.info
+	$(LCOV) -a $(LCOV_OPTS) baseline_filtered.info -a test_bitcoin_filtered.info -a functional_test_filtered.info -o $@ | $(GREP) "\%" | $(AWK) '{ print substr($$3,2,50) "/" $$5 }' > coverage_percent.txt

 test_bitcoin.coverage/.dirstamp:  test_bitcoin_coverage.info
-	$(GENHTML) -s $< -o $(@D)
+	$(GENHTML) -s $(LCOV_OPTS) $< -o $(@D)
 	@touch $@

 total.coverage/.dirstamp: total_coverage.info
-	$(GENHTML) -s $< -o $(@D)
+	$(GENHTML) -s $(LCOV_OPTS) $< -o $(@D)
 	@touch $@

 cov: test_bitcoin.coverage/.dirstamp total.coverage/.dirstamp

 endif

-if USE_COMPARISON_TOOL
-check-local:
-	$(MKDIR_P) qa/tmp
-	@qa/pull-tester/run-bitcoind-for-test.sh $(JAVA) -jar $(JAVA_COMPARISON_TOOL) qa/tmp/compTool $(COMPARISON_TOOL_REORG_TESTS) 2>&1
-endif
-
 dist_noinst_SCRIPTS = autogen.sh

-EXTRA_DIST = $(top_srcdir)/share/genbuild.sh qa/pull-tester/rpc-tests.py qa/rpc-tests $(DIST_DOCS) $(WINDOWS_PACKAGING) $(OSX_PACKAGING)
+EXTRA_DIST = $(DIST_SHARE) test/functional/test_runner.py test/functional $(DIST_CONTRIB) $(DIST_DOCS) $(WINDOWS_PACKAGING) $(OSX_PACKAGING) $(BIN_CHECKS)
+
+EXTRA_DIST += \
+    test/util/bitcoin-util-test.py \
+    test/util/data/bitcoin-util-test.json \
+    test/util/data/blanktxv1.hex \
+    test/util/data/blanktxv1.json \
+    test/util/data/blanktxv2.hex \
+    test/util/data/blanktxv2.json \
+    test/util/data/tt-delin1-out.hex \
+    test/util/data/tt-delin1-out.json \
+    test/util/data/tt-delout1-out.hex \
+    test/util/data/tt-delout1-out.json \
+    test/util/data/tt-locktime317000-out.hex \
+    test/util/data/tt-locktime317000-out.json \
+    test/util/data/tx394b54bb.hex \
+    test/util/data/txcreate1.hex \
+    test/util/data/txcreate1.json \
+    test/util/data/txcreate2.hex \
+    test/util/data/txcreate2.json \
+    test/util/data/txcreatedata1.hex \
+    test/util/data/txcreatedata1.json \
+    test/util/data/txcreatedata2.hex \
+    test/util/data/txcreatedata2.json \
+    test/util/data/txcreatedata_seq0.hex \
+    test/util/data/txcreatedata_seq0.json \
+    test/util/data/txcreatedata_seq1.hex \
+    test/util/data/txcreatedata_seq1.json \
+    test/util/data/txcreatemultisig1.hex \
+    test/util/data/txcreatemultisig1.json \
+    test/util/data/txcreatemultisig2.hex \
+    test/util/data/txcreatemultisig2.json \
+    test/util/data/txcreatemultisig3.hex \
+    test/util/data/txcreatemultisig3.json \
+    test/util/data/txcreatemultisig4.hex \
+    test/util/data/txcreatemultisig4.json \
+    test/util/data/txcreatemultisig5.json \
+    test/util/data/txcreateoutpubkey1.hex \
+    test/util/data/txcreateoutpubkey1.json \
+    test/util/data/txcreateoutpubkey2.hex \
+    test/util/data/txcreateoutpubkey2.json \
+    test/util/data/txcreateoutpubkey3.hex \
+    test/util/data/txcreateoutpubkey3.json \
+    test/util/data/txcreatescript1.hex \
+    test/util/data/txcreatescript1.json \
+    test/util/data/txcreatescript2.hex \
+    test/util/data/txcreatescript2.json \
+    test/util/data/txcreatescript3.hex \
+    test/util/data/txcreatescript3.json \
+    test/util/data/txcreatescript4.hex \
+    test/util/data/txcreatescript4.json \
+    test/util/data/txcreatesignv1.hex \
+    test/util/data/txcreatesignv1.json \
+    test/util/data/txcreatesignv2.hex

 CLEANFILES = $(OSX_DMG) $(BITCOIN_WIN_INSTALLER)

 .INTERMEDIATE: $(COVERAGE_INFO)

+DISTCHECK_CONFIGURE_FLAGS = --enable-man
+
 clean-local:
-	rm -rf coverage_percent.txt test_bitcoin.coverage/ total.coverage/ qa/tmp/ cache/ $(OSX_APP)
+	rm -rf coverage_percent.txt test_bitcoin.coverage/ total.coverage/ test/tmp/ cache/ $(OSX_APP)
+	rm -rf test/functional/__pycache__ test/functional/test_framework/__pycache__ test/cache
--- a/README.md
+++ b/README.md
@@ -3,25 +3,26 @@ Bitcoin Core integration/staging tree

 [![Build Status](https://travis-ci.org/bitcoin/bitcoin.svg?branch=master)](https://travis-ci.org/bitcoin/bitcoin)

-https://www.bitcoin.org
+https://bitcoincore.org

 What is Bitcoin?
 ----------------

-Bitcoin is an experimental new digital currency that enables instant payments to
+Bitcoin is an experimental digital currency that enables instant payments to
 anyone, anywhere in the world. Bitcoin uses peer-to-peer technology to operate
 with no central authority: managing transactions and issuing money are carried
 out collectively by the network. Bitcoin Core is the name of open source
 software which enables the use of this currency.

 For more information, as well as an immediately useable, binary version of
-the Bitcoin Core software, see https://www.bitcoin.org/en/download.
+the Bitcoin Core software, see https://bitcoin.org/en/download, or read the
+[original whitepaper](https://bitcoincore.org/bitcoin.pdf).

 License
 -------

 Bitcoin Core is released under the terms of the MIT license. See [COPYING](COPYING) for more
-information or see http://opensource.org/licenses/MIT.
+information or see https://opensource.org/licenses/MIT.

 Development Process
 -------------------
@@ -48,16 +49,16 @@ lots of money.

 ### Automated Testing

-Developers are strongly encouraged to write [unit tests](/doc/unit-tests.md) for new code, and to
+Developers are strongly encouraged to write [unit tests](src/test/README.md) for new code, and to
 submit new unit tests for old code. Unit tests can be compiled and run
-(assuming they weren't disabled in configure) with: `make check`
+(assuming they weren't disabled in configure) with: `make check`. Further details on running
+and extending unit tests can be found in [/src/test/README.md](/src/test/README.md).

-There are also [regression and integration tests](/qa) of the RPC interface, written
+There are also [regression and integration tests](/test), written
 in Python, that are run automatically on the build server.
-These tests can be run with: `qa/pull-tester/rpc-tests.py`
+These tests can be run (if the [test dependencies](/test) are installed) with: `test/functional/test_runner.py`

-The Travis CI system makes sure that every pull request is built for Windows
-and Linux, OSX, and that unit and sanity tests are automatically run.
+The Travis CI system makes sure that every pull request is built for Windows, Linux, and OS X, and that unit/sanity tests are run automatically.

 ### Manual Quality Assurance (QA) Testing

--- a/autogen.sh
+++ b/autogen.sh
@@ -1,4 +1,8 @@
 #!/bin/sh
+# Copyright (c) 2013-2016 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 set -e
 srcdir="$(dirname $0)"
 cd "$srcdir"
@@ -6,4 +10,6 @@ if [ -z ${LIBTOOLIZE} ] && GLIBTOOLIZE="`which glibtoolize 2>/dev/null`"; then
  LIBTOOLIZE="${GLIBTOOLIZE}"
  export LIBTOOLIZE
 fi
+which autoreconf >/dev/null || \
+  (echo "configuration failed, please install autoconf first" && exit 1)
 autoreconf --install --force --warnings=all
--- a/build-aux/m4/ax_boost_base.m4
+++ b/build-aux/m4/ax_boost_base.m4
@@ -33,7 +33,7 @@
 #   and this notice are preserved. This file is offered as-is, without any
 #   warranty.

-#serial 23
+#serial 27

 AC_DEFUN([AX_BOOST_BASE],
 [
@@ -95,7 +95,7 @@ if test "x$want_boost" = "xyes"; then
      x86_64)
        libsubdirs="lib64 libx32 lib lib64"
        ;;
-      ppc64|s390x|sparc64|aarch64)
+      ppc64|s390x|sparc64|aarch64|ppc64le)
        libsubdirs="lib64 lib lib64"
        ;;
    esac
@@ -170,7 +170,7 @@ if test "x$want_boost" = "xyes"; then
        AC_MSG_RESULT(yes)
    succeeded=yes
    found_system=yes
-        ],[:
+        ],[
        ])
    AC_LANG_POP([C++])

@@ -179,6 +179,10 @@ if test "x$want_boost" = "xyes"; then
    dnl if we found no boost with system layout we search for boost libraries
    dnl built and installed without the --layout=system option or for a staged(not installed) version
    if test "x$succeeded" != "xyes"; then
+        CPPFLAGS="$CPPFLAGS_SAVED"
+        LDFLAGS="$LDFLAGS_SAVED"
+        BOOST_CPPFLAGS=
+        BOOST_LDFLAGS=
        _version=0
        if test "$ac_boost_path" != ""; then
            if test -d "$ac_boost_path" && test -r "$ac_boost_path"; then
@@ -191,6 +195,12 @@ if test "x$want_boost" = "xyes"; then
                    VERSION_UNDERSCORE=`echo $_version | sed 's/\./_/'`
                    BOOST_CPPFLAGS="-I$ac_boost_path/include/boost-$VERSION_UNDERSCORE"
                done
+                dnl if nothing found search for layout used in Windows distributions
+                if test -z "$BOOST_CPPFLAGS"; then
+                    if test -d "$ac_boost_path/boost" && test -r "$ac_boost_path/boost"; then
+                        BOOST_CPPFLAGS="-I$ac_boost_path"
+                    fi
+                fi
            fi
        else
            if test "$cross_compiling" != yes; then
@@ -253,7 +263,7 @@ if test "x$want_boost" = "xyes"; then
            AC_MSG_RESULT(yes)
        succeeded=yes
        found_system=yes
-            ],[:
+            ],[
            ])
        AC_LANG_POP([C++])
    fi
--- a/build-aux/m4/ax_boost_program_options.m4
+++ b/build-aux/m4/ax_boost_program_options.m4
@@ -29,7 +29,7 @@
 #   and this notice are preserved. This file is offered as-is, without any
 #   warranty.

-#serial 22
+#serial 24

 AC_DEFUN([AX_BOOST_PROGRAM_OPTIONS],
 [
@@ -63,9 +63,9 @@ AC_DEFUN([AX_BOOST_PROGRAM_OPTIONS],
 		AC_CACHE_CHECK([whether the Boost::Program_Options library is available],
 					   ax_cv_boost_program_options,
 					   [AC_LANG_PUSH(C++)
-				AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <boost/program_options.hpp>
+				AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <boost/program_options/errors.hpp>
                                                          ]],
-                                  [[boost::program_options::options_description generic("Generic options");
+                                  [[boost::program_options::error err("Error message");
                                   return 0;]])],
                           ax_cv_boost_program_options=yes, ax_cv_boost_program_options=no)
 					AC_LANG_POP([C++])
@@ -74,7 +74,6 @@ AC_DEFUN([AX_BOOST_PROGRAM_OPTIONS],
 				AC_DEFINE(HAVE_BOOST_PROGRAM_OPTIONS,,[define if the Boost::PROGRAM_OPTIONS library is available])
                  BOOSTLIBDIR=`echo $BOOST_LDFLAGS | sed -e 's/@<:@^\/@:>@*//'`
                if test "x$ax_boost_user_program_options_lib" = "x"; then
-                ax_lib=
                for libextension in `ls $BOOSTLIBDIR/libboost_program_options*.so* 2>/dev/null | sed 's,.*/,,' | sed -e 's;^lib\(boost_program_options.*\)\.so.*$;\1;'` `ls $BOOSTLIBDIR/libboost_program_options*.dylib* 2>/dev/null | sed 's,.*/,,' | sed -e 's;^lib\(boost_program_options.*\)\.dylib.*$;\1;'` `ls $BOOSTLIBDIR/libboost_program_options*.a* 2>/dev/null | sed 's,.*/,,' | sed -e 's;^lib\(boost_program_options.*\)\.a.*$;\1;'` ; do
                     ax_lib=${libextension}
 				    AC_CHECK_LIB($ax_lib, exit,
--- a/build-aux/m4/ax_boost_system.m4
+++ b/build-aux/m4/ax_boost_system.m4
@@ -31,7 +31,7 @@
 #   and this notice are preserved. This file is offered as-is, without any
 #   warranty.

-#serial 17
+#serial 18

 AC_DEFUN([AX_BOOST_SYSTEM],
 [
@@ -68,9 +68,10 @@ AC_DEFUN([AX_BOOST_SYSTEM],
 					   ax_cv_boost_system,
        [AC_LANG_PUSH([C++])
 			 CXXFLAGS_SAVE=$CXXFLAGS
+			 CXXFLAGS=

 			 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <boost/system/error_code.hpp>]],
-                                   [[boost::system::system_category]])],
+				    [[boost::system::error_category *a = 0;]])],
                   ax_cv_boost_system=yes, ax_cv_boost_system=no)
 			 CXXFLAGS=$CXXFLAGS_SAVE
             AC_LANG_POP([C++])
--- a/build-aux/m4/ax_check_compile_flag.m4
+++ b/build-aux/m4/ax_check_compile_flag.m4
@@ -4,7 +4,7 @@
 #
 # SYNOPSIS
 #
-#   AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS])
+#   AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT])
 #
 # DESCRIPTION
 #
@@ -19,6 +19,8 @@
 #   the flags: "CFLAGS EXTRA-FLAGS FLAG".  This can for example be used to
 #   force the compiler to issue an error when a bad flag is given.
 #
+#   INPUT gives an alternative input source to AC_COMPILE_IFELSE.
+#
 #   NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
 #   macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG.
 #
@@ -53,19 +55,19 @@
 #   modified version of the Autoconf Macro, you may extend this special
 #   exception to the GPL to apply to your modified version as well.

-#serial 2
+#serial 4

 AC_DEFUN([AX_CHECK_COMPILE_FLAG],
-[AC_PREREQ(2.59)dnl for _AC_LANG_PREFIX
+[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF
 AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl
 AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [
  ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS
  _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1"
-  AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
+  AC_COMPILE_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])],
    [AS_VAR_SET(CACHEVAR,[yes])],
    [AS_VAR_SET(CACHEVAR,[no])])
  _AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags])
-AS_IF([test x"AS_VAR_GET(CACHEVAR)" = xyes],
+AS_VAR_IF(CACHEVAR,yes,
  [m4_default([$2], :)],
  [m4_default([$3], :)])
 AS_VAR_POPDEF([CACHEVAR])dnl
--- a/build-aux/m4/ax_check_link_flag.m4
+++ b/build-aux/m4/ax_check_link_flag.m4
@@ -4,7 +4,7 @@
 #
 # SYNOPSIS
 #
-#   AX_CHECK_LINK_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS])
+#   AX_CHECK_LINK_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT])
 #
 # DESCRIPTION
 #
@@ -19,6 +19,8 @@
 #   EXTRA-FLAGS FLAG".  This can for example be used to force the linker to
 #   issue an error when a bad flag is given.
 #
+#   INPUT gives an alternative input source to AC_LINK_IFELSE.
+#
 #   NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
 #   macro in sync with AX_CHECK_{PREPROC,COMPILE}_FLAG.
 #
@@ -53,18 +55,19 @@
 #   modified version of the Autoconf Macro, you may extend this special
 #   exception to the GPL to apply to your modified version as well.

-#serial 2
+#serial 4

 AC_DEFUN([AX_CHECK_LINK_FLAG],
-[AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_ldflags_$4_$1])dnl
+[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF
+AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_ldflags_$4_$1])dnl
 AC_CACHE_CHECK([whether the linker accepts $1], CACHEVAR, [
  ax_check_save_flags=$LDFLAGS
  LDFLAGS="$LDFLAGS $4 $1"
-  AC_LINK_IFELSE([AC_LANG_PROGRAM()],
+  AC_LINK_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])],
    [AS_VAR_SET(CACHEVAR,[yes])],
    [AS_VAR_SET(CACHEVAR,[no])])
  LDFLAGS=$ax_check_save_flags])
-AS_IF([test x"AS_VAR_GET(CACHEVAR)" = xyes],
+AS_VAR_IF(CACHEVAR,yes,
  [m4_default([$2], :)],
  [m4_default([$3], :)])
 AS_VAR_POPDEF([CACHEVAR])dnl
--- a/build-aux/m4/ax_check_preproc_flag.m4
+++ b/build-aux/m4/ax_check_preproc_flag.m4
@@ -4,7 +4,7 @@
 #
 # SYNOPSIS
 #
-#   AX_CHECK_PREPROC_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS])
+#   AX_CHECK_PREPROC_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT])
 #
 # DESCRIPTION
 #
@@ -19,6 +19,8 @@
 #   "CPPFLAGS EXTRA-FLAGS FLAG".  This can for example be used to force the
 #   preprocessor to issue an error when a bad flag is given.
 #
+#   INPUT gives an alternative input source to AC_PREPROC_IFELSE.
+#
 #   NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
 #   macro in sync with AX_CHECK_{COMPILE,LINK}_FLAG.
 #
@@ -53,19 +55,19 @@
 #   modified version of the Autoconf Macro, you may extend this special
 #   exception to the GPL to apply to your modified version as well.

-#serial 2
+#serial 4

 AC_DEFUN([AX_CHECK_PREPROC_FLAG],
-[AC_PREREQ(2.59)dnl for _AC_LANG_PREFIX
+[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF
 AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]cppflags_$4_$1])dnl
 AC_CACHE_CHECK([whether _AC_LANG preprocessor accepts $1], CACHEVAR, [
  ax_check_save_flags=$CPPFLAGS
  CPPFLAGS="$CPPFLAGS $4 $1"
-  AC_PREPROC_IFELSE([AC_LANG_PROGRAM()],
+  AC_PREPROC_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])],
    [AS_VAR_SET(CACHEVAR,[yes])],
    [AS_VAR_SET(CACHEVAR,[no])])
  CPPFLAGS=$ax_check_save_flags])
-AS_IF([test x"AS_VAR_GET(CACHEVAR)" = xyes],
+AS_VAR_IF(CACHEVAR,yes,
  [m4_default([$2], :)],
  [m4_default([$3], :)])
 AS_VAR_POPDEF([CACHEVAR])dnl
--- a/build-aux/m4/ax_cxx_compile_stdcxx.m4
+++ b/build-aux/m4/ax_cxx_compile_stdcxx.m4
@@ -0,0 +1,568 @@
+# ===========================================================================
+#   http://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_CXX_COMPILE_STDCXX(VERSION, [ext|noext], [mandatory|optional])
+#
+# DESCRIPTION
+#
+#   Check for baseline language coverage in the compiler for the specified
+#   version of the C++ standard.  If necessary, add switches to CXX and
+#   CXXCPP to enable support.  VERSION may be '11' (for the C++11 standard)
+#   or '14' (for the C++14 standard).
+#
+#   The second argument, if specified, indicates whether you insist on an
+#   extended mode (e.g. -std=gnu++11) or a strict conformance mode (e.g.
+#   -std=c++11).  If neither is specified, you get whatever works, with
+#   preference for an extended mode.
+#
+#   The third argument, if specified 'mandatory' or if left unspecified,
+#   indicates that baseline support for the specified C++ standard is
+#   required and that the macro should error out if no mode with that
+#   support is found.  If specified 'optional', then configuration proceeds
+#   regardless, after defining HAVE_CXX${VERSION} if and only if a
+#   supporting mode is found.
+#
+# LICENSE
+#
+#   Copyright (c) 2008 Benjamin Kosnik <bkoz@redhat.com>
+#   Copyright (c) 2012 Zack Weinberg <zackw@panix.com>
+#   Copyright (c) 2013 Roy Stogner <roystgnr@ices.utexas.edu>
+#   Copyright (c) 2014, 2015 Google Inc.; contributed by Alexey Sokolov <sokolov@google.com>
+#   Copyright (c) 2015 Paul Norman <penorman@mac.com>
+#   Copyright (c) 2015 Moritz Klammler <moritz@klammler.eu>
+#
+#   Copying and distribution of this file, with or without modification, are
+#   permitted in any medium without royalty provided the copyright notice
+#   and this notice are preserved.  This file is offered as-is, without any
+#   warranty.
+
+#serial 4
+
+dnl  This macro is based on the code from the AX_CXX_COMPILE_STDCXX_11 macro
+dnl  (serial version number 13).
+
+AC_DEFUN([AX_CXX_COMPILE_STDCXX], [dnl
+  m4_if([$1], [11], [],
+        [$1], [14], [],
+        [$1], [17], [m4_fatal([support for C++17 not yet implemented in AX_CXX_COMPILE_STDCXX])],
+        [m4_fatal([invalid first argument `$1' to AX_CXX_COMPILE_STDCXX])])dnl
+  m4_if([$2], [], [],
+        [$2], [ext], [],
+        [$2], [noext], [],
+        [m4_fatal([invalid second argument `$2' to AX_CXX_COMPILE_STDCXX])])dnl
+  m4_if([$3], [], [ax_cxx_compile_cxx$1_required=true],
+        [$3], [mandatory], [ax_cxx_compile_cxx$1_required=true],
+        [$3], [optional], [ax_cxx_compile_cxx$1_required=false],
+        [m4_fatal([invalid third argument `$3' to AX_CXX_COMPILE_STDCXX])])
+  m4_if([$4], [], [ax_cxx_compile_cxx$1_try_default=true],
+        [$4], [default], [ax_cxx_compile_cxx$1_try_default=true],
+        [$4], [nodefault], [ax_cxx_compile_cxx$1_try_default=false],
+        [m4_fatal([invalid fourth argument `$4' to AX_CXX_COMPILE_STDCXX])])
+  AC_LANG_PUSH([C++])dnl
+  ac_success=no
+
+  m4_if([$4], [nodefault], [], [dnl
+  AC_CACHE_CHECK(whether $CXX supports C++$1 features by default,
+  ax_cv_cxx_compile_cxx$1,
+  [AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
+    [ax_cv_cxx_compile_cxx$1=yes],
+    [ax_cv_cxx_compile_cxx$1=no])])
+  if test x$ax_cv_cxx_compile_cxx$1 = xyes; then
+    ac_success=yes
+  fi])
+
+  m4_if([$2], [noext], [], [dnl
+  if test x$ac_success = xno; then
+    for switch in -std=gnu++$1 -std=gnu++0x; do
+      cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx$1_$switch])
+      AC_CACHE_CHECK(whether $CXX supports C++$1 features with $switch,
+                     $cachevar,
+        [ac_save_CXX="$CXX"
+         CXX="$CXX $switch"
+         AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
+          [eval $cachevar=yes],
+          [eval $cachevar=no])
+         CXX="$ac_save_CXX"])
+      if eval test x\$$cachevar = xyes; then
+        CXX="$CXX $switch"
+        if test -n "$CXXCPP" ; then
+          CXXCPP="$CXXCPP $switch"
+        fi
+        ac_success=yes
+        break
+      fi
+    done
+  fi])
+
+  m4_if([$2], [ext], [], [dnl
+  if test x$ac_success = xno; then
+    dnl HP's aCC needs +std=c++11 according to:
+    dnl http://h21007.www2.hp.com/portal/download/files/unprot/aCxx/PDF_Release_Notes/769149-001.pdf
+    dnl Cray's crayCC needs "-h std=c++11"
+    for switch in -std=c++$1 -std=c++0x +std=c++$1 "-h std=c++$1"; do
+      cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx$1_$switch])
+      AC_CACHE_CHECK(whether $CXX supports C++$1 features with $switch,
+                     $cachevar,
+        [ac_save_CXX="$CXX"
+         CXX="$CXX $switch"
+         AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
+          [eval $cachevar=yes],
+          [eval $cachevar=no])
+         CXX="$ac_save_CXX"])
+      if eval test x\$$cachevar = xyes; then
+        CXX="$CXX $switch"
+        if test -n "$CXXCPP" ; then
+          CXXCPP="$CXXCPP $switch"
+        fi
+        ac_success=yes
+        break
+      fi
+    done
+  fi])
+  AC_LANG_POP([C++])
+  if test x$ax_cxx_compile_cxx$1_required = xtrue; then
+    if test x$ac_success = xno; then
+      AC_MSG_ERROR([*** A compiler with support for C++$1 language features is required.])
+    fi
+  fi
+  if test x$ac_success = xno; then
+    HAVE_CXX$1=0
+    AC_MSG_NOTICE([No compiler with C++$1 support was found])
+  else
+    HAVE_CXX$1=1
+    AC_DEFINE(HAVE_CXX$1,1,
+              [define if the compiler supports basic C++$1 syntax])
+  fi
+  AC_SUBST(HAVE_CXX$1)
+])
+
+
+dnl  Test body for checking C++11 support
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_11],
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_11
+)
+
+
+dnl  Test body for checking C++14 support
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_14],
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_11
+  _AX_CXX_COMPILE_STDCXX_testbody_new_in_14
+)
+
+
+dnl  Tests for new features in C++11
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_11], [[
+
+// If the compiler admits that it is not ready for C++11, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201103L
+
+#error "This is not a C++11 compiler"
+
+#else
+
+namespace cxx11
+{
+
+  namespace test_static_assert
+  {
+
+    template <typename T>
+    struct check
+    {
+      static_assert(sizeof(int) <= sizeof(T), "not big enough");
+    };
+
+  }
+
+  namespace test_final_override
+  {
+
+    struct Base
+    {
+      virtual void f() {}
+    };
+
+    struct Derived : public Base
+    {
+      virtual void f() override {}
+    };
+
+  }
+
+  namespace test_double_right_angle_brackets
+  {
+
+    template < typename T >
+    struct check {};
+
+    typedef check<void> single_type;
+    typedef check<check<void>> double_type;
+    typedef check<check<check<void>>> triple_type;
+    typedef check<check<check<check<void>>>> quadruple_type;
+
+  }
+
+  namespace test_decltype
+  {
+
+    int
+    f()
+    {
+      int a = 1;
+      decltype(a) b = 2;
+      return a + b;
+    }
+
+  }
+
+  namespace test_type_deduction
+  {
+
+    template < typename T1, typename T2 >
+    struct is_same
+    {
+      static const bool value = false;
+    };
+
+    template < typename T >
+    struct is_same<T, T>
+    {
+      static const bool value = true;
+    };
+
+    template < typename T1, typename T2 >
+    auto
+    add(T1 a1, T2 a2) -> decltype(a1 + a2)
+    {
+      return a1 + a2;
+    }
+
+    int
+    test(const int c, volatile int v)
+    {
+      static_assert(is_same<int, decltype(0)>::value == true, "");
+      static_assert(is_same<int, decltype(c)>::value == false, "");
+      static_assert(is_same<int, decltype(v)>::value == false, "");
+      auto ac = c;
+      auto av = v;
+      auto sumi = ac + av + 'x';
+      auto sumf = ac + av + 1.0;
+      static_assert(is_same<int, decltype(ac)>::value == true, "");
+      static_assert(is_same<int, decltype(av)>::value == true, "");
+      static_assert(is_same<int, decltype(sumi)>::value == true, "");
+      static_assert(is_same<int, decltype(sumf)>::value == false, "");
+      static_assert(is_same<int, decltype(add(c, v))>::value == true, "");
+      return (sumf > 0.0) ? sumi : add(c, v);
+    }
+
+  }
+
+  namespace test_noexcept
+  {
+
+    int f() { return 0; }
+    int g() noexcept { return 0; }
+
+    static_assert(noexcept(f()) == false, "");
+    static_assert(noexcept(g()) == true, "");
+
+  }
+
+  namespace test_constexpr
+  {
+
+    template < typename CharT >
+    unsigned long constexpr
+    strlen_c_r(const CharT *const s, const unsigned long acc) noexcept
+    {
+      return *s ? strlen_c_r(s + 1, acc + 1) : acc;
+    }
+
+    template < typename CharT >
+    unsigned long constexpr
+    strlen_c(const CharT *const s) noexcept
+    {
+      return strlen_c_r(s, 0UL);
+    }
+
+    static_assert(strlen_c("") == 0UL, "");
+    static_assert(strlen_c("1") == 1UL, "");
+    static_assert(strlen_c("example") == 7UL, "");
+    static_assert(strlen_c("another\0example") == 7UL, "");
+
+  }
+
+  namespace test_rvalue_references
+  {
+
+    template < int N >
+    struct answer
+    {
+      static constexpr int value = N;
+    };
+
+    answer<1> f(int&)       { return answer<1>(); }
+    answer<2> f(const int&) { return answer<2>(); }
+    answer<3> f(int&&)      { return answer<3>(); }
+
+    void
+    test()
+    {
+      int i = 0;
+      const int c = 0;
+      static_assert(decltype(f(i))::value == 1, "");
+      static_assert(decltype(f(c))::value == 2, "");
+      static_assert(decltype(f(0))::value == 3, "");
+    }
+
+  }
+
+  namespace test_uniform_initialization
+  {
+
+    struct test
+    {
+      static const int zero {};
+      static const int one {1};
+    };
+
+    static_assert(test::zero == 0, "");
+    static_assert(test::one == 1, "");
+
+  }
+
+  namespace test_lambdas
+  {
+
+    void
+    test1()
+    {
+      auto lambda1 = [](){};
+      auto lambda2 = lambda1;
+      lambda1();
+      lambda2();
+    }
+
+    int
+    test2()
+    {
+      auto a = [](int i, int j){ return i + j; }(1, 2);
+      auto b = []() -> int { return '0'; }();
+      auto c = [=](){ return a + b; }();
+      auto d = [&](){ return c; }();
+      auto e = [a, &b](int x) mutable {
+        const auto identity = [](int y){ return y; };
+        for (auto i = 0; i < a; ++i)
+          a += b--;
+        return x + identity(a + b);
+      }(0);
+      return a + b + c + d + e;
+    }
+
+    int
+    test3()
+    {
+      const auto nullary = [](){ return 0; };
+      const auto unary = [](int x){ return x; };
+      using nullary_t = decltype(nullary);
+      using unary_t = decltype(unary);
+      const auto higher1st = [](nullary_t f){ return f(); };
+      const auto higher2nd = [unary](nullary_t f1){
+        return [unary, f1](unary_t f2){ return f2(unary(f1())); };
+      };
+      return higher1st(nullary) + higher2nd(nullary)(unary);
+    }
+
+  }
+
+  namespace test_variadic_templates
+  {
+
+    template <int...>
+    struct sum;
+
+    template <int N0, int... N1toN>
+    struct sum<N0, N1toN...>
+    {
+      static constexpr auto value = N0 + sum<N1toN...>::value;
+    };
+
+    template <>
+    struct sum<>
+    {
+      static constexpr auto value = 0;
+    };
+
+    static_assert(sum<>::value == 0, "");
+    static_assert(sum<1>::value == 1, "");
+    static_assert(sum<23>::value == 23, "");
+    static_assert(sum<1, 2>::value == 3, "");
+    static_assert(sum<5, 5, 11>::value == 21, "");
+    static_assert(sum<2, 3, 5, 7, 11, 13>::value == 41, "");
+
+  }
+
+  // http://stackoverflow.com/questions/13728184/template-aliases-and-sfinae
+  // Clang 3.1 fails with headers of libstd++ 4.8.3 when using std::function
+  // because of this.
+  namespace test_template_alias_sfinae
+  {
+
+    struct foo {};
+
+    template<typename T>
+    using member = typename T::member_type;
+
+    template<typename T>
+    void func(...) {}
+
+    template<typename T>
+    void func(member<T>*) {}
+
+    void test();
+
+    void test() { func<foo>(0); }
+
+  }
+
+}  // namespace cxx11
+
+#endif  // __cplusplus >= 201103L
+
+]])
+
+
+dnl  Tests for new features in C++14
+
+m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_14], [[
+
+// If the compiler admits that it is not ready for C++14, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201402L
+
+#error "This is not a C++14 compiler"
+
+#else
+
+namespace cxx14
+{
+
+  namespace test_polymorphic_lambdas
+  {
+
+    int
+    test()
+    {
+      const auto lambda = [](auto&&... args){
+        const auto istiny = [](auto x){
+          return (sizeof(x) == 1UL) ? 1 : 0;
+        };
+        const int aretiny[] = { istiny(args)... };
+        return aretiny[0];
+      };
+      return lambda(1, 1L, 1.0f, '1');
+    }
+
+  }
+
+  namespace test_binary_literals
+  {
+
+    constexpr auto ivii = 0b0000000000101010;
+    static_assert(ivii == 42, "wrong value");
+
+  }
+
+  namespace test_generalized_constexpr
+  {
+
+    template < typename CharT >
+    constexpr unsigned long
+    strlen_c(const CharT *const s) noexcept
+    {
+      auto length = 0UL;
+      for (auto p = s; *p; ++p)
+        ++length;
+      return length;
+    }
+
+    static_assert(strlen_c("") == 0UL, "");
+    static_assert(strlen_c("x") == 1UL, "");
+    static_assert(strlen_c("test") == 4UL, "");
+    static_assert(strlen_c("another\0test") == 7UL, "");
+
+  }
+
+  namespace test_lambda_init_capture
+  {
+
+    int
+    test()
+    {
+      auto x = 0;
+      const auto lambda1 = [a = x](int b){ return a + b; };
+      const auto lambda2 = [a = lambda1(x)](){ return a; };
+      return lambda2();
+    }
+
+  }
+
+  namespace test_digit_seperators
+  {
+
+    constexpr auto ten_million = 100'000'000;
+    static_assert(ten_million == 100000000, "");
+
+  }
+
+  namespace test_return_type_deduction
+  {
+
+    auto f(int& x) { return x; }
+    decltype(auto) g(int& x) { return x; }
+
+    template < typename T1, typename T2 >
+    struct is_same
+    {
+      static constexpr auto value = false;
+    };
+
+    template < typename T >
+    struct is_same<T, T>
+    {
+      static constexpr auto value = true;
+    };
+
+    int
+    test()
+    {
+      auto x = 0;
+      static_assert(is_same<int, decltype(f(x))>::value, "");
+      static_assert(is_same<int&, decltype(g(x))>::value, "");
+      return x;
+    }
+
+  }
+
+}  // namespace cxx14
+
+#endif  // __cplusplus >= 201402L
+
+]])
--- a/build-aux/m4/ax_gcc_func_attribute.m4
+++ b/build-aux/m4/ax_gcc_func_attribute.m4
@@ -31,6 +31,7 @@
 #    cold
 #    const
 #    constructor
+#    constructor_priority for constructor attribute with priority
 #    deprecated
 #    destructor
 #    dllexport
@@ -73,7 +74,7 @@
 #   and this notice are preserved.  This file is offered as-is, without any
 #   warranty.

-#serial 2
+#serial 3

 AC_DEFUN([AX_GCC_FUNC_ATTRIBUTE], [
    AS_VAR_PUSHDEF([ac_var], [ax_cv_have_func_attribute_$1])
@@ -103,6 +104,9 @@ AC_DEFUN([AX_GCC_FUNC_ATTRIBUTE], [
                [const], [
                    int foo( void ) __attribute__(($1));
                ],
+                [constructor_priority], [
+                    int foo( void ) __attribute__((__constructor__(65535/2)));
+                ],
                [constructor], [
                    int foo( void ) __attribute__(($1));
                ],
@@ -180,6 +184,8 @@ AC_DEFUN([AX_GCC_FUNC_ATTRIBUTE], [
                [visibility], [
                    int foo_def( void ) __attribute__(($1("default")));
                    int foo_hid( void ) __attribute__(($1("hidden")));
+                    int foo_int( void ) __attribute__(($1("internal")));
+                    int foo_pro( void ) __attribute__(($1("protected")));
                ],
                [warning], [
                    int foo( void ) __attribute__(($1("")));
--- a/build-aux/m4/ax_pthread.m4
+++ b/build-aux/m4/ax_pthread.m4
@@ -19,10 +19,10 @@
 #   is necessary on AIX to use the special cc_r compiler alias.)
 #
 #   NOTE: You are assumed to not only compile your program with these flags,
-#   but also link it with them as well. e.g. you should link with
+#   but also to link with them as well. For example, you might link with
 #   $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS $LIBS
 #
-#   If you are only building threads programs, you may wish to use these
+#   If you are only building threaded programs, you may wish to use these
 #   variables in your default LIBS, CFLAGS, and CC:
 #
 #     LIBS="$PTHREAD_LIBS $LIBS"
@@ -30,8 +30,8 @@
 #     CC="$PTHREAD_CC"
 #
 #   In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute constant
-#   has a nonstandard name, defines PTHREAD_CREATE_JOINABLE to that name
-#   (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
+#   has a nonstandard name, this macro defines PTHREAD_CREATE_JOINABLE to
+#   that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
 #
 #   Also HAVE_PTHREAD_PRIO_INHERIT is defined if pthread is found and the
 #   PTHREAD_PRIO_INHERIT symbol is defined when compiling with
@@ -82,35 +82,40 @@
 #   modified version of the Autoconf Macro, you may extend this special
 #   exception to the GPL to apply to your modified version as well.

-#serial 21
+#serial 23

 AU_ALIAS([ACX_PTHREAD], [AX_PTHREAD])
 AC_DEFUN([AX_PTHREAD], [
 AC_REQUIRE([AC_CANONICAL_HOST])
+AC_REQUIRE([AC_PROG_CC])
+AC_REQUIRE([AC_PROG_SED])
 AC_LANG_PUSH([C])
 ax_pthread_ok=no

 # We used to check for pthread.h first, but this fails if pthread.h
-# requires special compiler flags (e.g. on True64 or Sequent).
+# requires special compiler flags (e.g. on Tru64 or Sequent).
 # It gets checked for in the link test anyway.

 # First of all, check if the user has set any of the PTHREAD_LIBS,
 # etcetera environment variables, and if threads linking works using
 # them:
-if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then
-        save_CFLAGS="$CFLAGS"
+if test "x$PTHREAD_CFLAGS$PTHREAD_LIBS" != "x"; then
+        ax_pthread_save_CC="$CC"
+        ax_pthread_save_CFLAGS="$CFLAGS"
+        ax_pthread_save_LIBS="$LIBS"
+        AS_IF([test "x$PTHREAD_CC" != "x"], [CC="$PTHREAD_CC"])
        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
-        save_LIBS="$LIBS"
        LIBS="$PTHREAD_LIBS $LIBS"
-        AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS])
-        AC_TRY_LINK_FUNC([pthread_join], [ax_pthread_ok=yes])
+        AC_MSG_CHECKING([for pthread_join using $CC $PTHREAD_CFLAGS $PTHREAD_LIBS])
+        AC_LINK_IFELSE([AC_LANG_CALL([], [pthread_join])], [ax_pthread_ok=yes])
        AC_MSG_RESULT([$ax_pthread_ok])
-        if test x"$ax_pthread_ok" = xno; then
+        if test "x$ax_pthread_ok" = "xno"; then
                PTHREAD_LIBS=""
                PTHREAD_CFLAGS=""
        fi
-        LIBS="$save_LIBS"
-        CFLAGS="$save_CFLAGS"
+        CC="$ax_pthread_save_CC"
+        CFLAGS="$ax_pthread_save_CFLAGS"
+        LIBS="$ax_pthread_save_LIBS"
 fi

 # We must check for the threads library under a number of different
@@ -123,7 +128,7 @@ fi
 # which indicates that we try without any flags at all, and "pthread-config"
 # which is a program returning the flags for the Pth emulation library.

-ax_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
+ax_pthread_flags="pthreads none -Kthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"

 # The ordering *is* (sometimes) important.  Some notes on the
 # individual items follow:
@@ -132,82 +137,225 @@ ax_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mt
 # none: in case threads are in libc; should be tried before -Kthread and
 #       other compiler flags to prevent continual compiler warnings
 # -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
-# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
-# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
-# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads)
-# -pthreads: Solaris/gcc
-# -mthreads: Mingw32/gcc, Lynx/gcc
+# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads), Tru64
+#           (Note: HP C rejects this with "bad form for `-t' option")
+# -pthreads: Solaris/gcc (Note: HP C also rejects)
 # -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
-#      doesn't hurt to check since this sometimes defines pthreads too;
-#      also defines -D_REENTRANT)
-#      ... -mt is also the pthreads flag for HP/aCC
+#      doesn't hurt to check since this sometimes defines pthreads and
+#      -D_REENTRANT too), HP C (must be checked before -lpthread, which
+#      is present but should not be used directly; and before -mthreads,
+#      because the compiler interprets this as "-mt" + "-hreads")
+# -mthreads: Mingw32/gcc, Lynx/gcc
 # pthread: Linux, etcetera
 # --thread-safe: KAI C++
 # pthread-config: use pthread-config program (for GNU Pth library)

-case ${host_os} in
+case $host_os in
+
+        freebsd*)
+
+        # -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
+        # lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
+
+        ax_pthread_flags="-kthread lthread $ax_pthread_flags"
+        ;;
+
+        hpux*)
+
+        # From the cc(1) man page: "[-mt] Sets various -D flags to enable
+        # multi-threading and also sets -lpthread."
+
+        ax_pthread_flags="-mt -pthread pthread $ax_pthread_flags"
+        ;;
+
+        openedition*)
+
+        # IBM z/OS requires a feature-test macro to be defined in order to
+        # enable POSIX threads at all, so give the user a hint if this is
+        # not set. (We don't define these ourselves, as they can affect
+        # other portions of the system API in unpredictable ways.)
+
+        AC_EGREP_CPP([AX_PTHREAD_ZOS_MISSING],
+            [
+#            if !defined(_OPEN_THREADS) && !defined(_UNIX03_THREADS)
+             AX_PTHREAD_ZOS_MISSING
+#            endif
+            ],
+            [AC_MSG_WARN([IBM z/OS requires -D_OPEN_THREADS or -D_UNIX03_THREADS to enable pthreads support.])])
+        ;;
+
        solaris*)

        # On Solaris (at least, for some versions), libc contains stubbed
        # (non-functional) versions of the pthreads routines, so link-based
-        # tests will erroneously succeed.  (We need to link with -pthreads/-mt/
-        # -lpthread.)  (The stubs are missing pthread_cleanup_push, or rather
-        # a function called by this macro, so we could check for that, but
-        # who knows whether they'll stub that too in a future libc.)  So,
-        # we'll just look for -pthreads and -lpthread first:
+        # tests will erroneously succeed. (N.B.: The stubs are missing
+        # pthread_cleanup_push, or rather a function called by this macro,
+        # so we could check for that, but who knows whether they'll stub
+        # that too in a future libc.)  So we'll check first for the
+        # standard Solaris way of linking pthreads (-mt -lpthread).

-        ax_pthread_flags="-pthreads pthread -mt -pthread $ax_pthread_flags"
-        ;;
-
-        darwin*)
-        ax_pthread_flags="-pthread $ax_pthread_flags"
+        ax_pthread_flags="-mt,pthread pthread $ax_pthread_flags"
        ;;
 esac

-# Clang doesn't consider unrecognized options an error unless we specify
-# -Werror. We throw in some extra Clang-specific options to ensure that
-# this doesn't happen for GCC, which also accepts -Werror.
+# GCC generally uses -pthread, or -pthreads on some platforms (e.g. SPARC)

-AC_MSG_CHECKING([if compiler needs -Werror to reject unknown flags])
-save_CFLAGS="$CFLAGS"
-ax_pthread_extra_flags="-Werror"
-CFLAGS="$CFLAGS $ax_pthread_extra_flags -Wunknown-warning-option -Wsizeof-array-argument"
-AC_COMPILE_IFELSE([AC_LANG_PROGRAM([int foo(void);],[foo()])],
-                  [AC_MSG_RESULT([yes])],
-                  [ax_pthread_extra_flags=
-                   AC_MSG_RESULT([no])])
-CFLAGS="$save_CFLAGS"
+AS_IF([test "x$GCC" = "xyes"],
+      [ax_pthread_flags="-pthread -pthreads $ax_pthread_flags"])

-if test x"$ax_pthread_ok" = xno; then
-for flag in $ax_pthread_flags; do
+# The presence of a feature test macro requesting re-entrant function
+# definitions is, on some systems, a strong hint that pthreads support is
+# correctly enabled

-        case $flag in
+case $host_os in
+        darwin* | hpux* | linux* | osf* | solaris*)
+        ax_pthread_check_macro="_REENTRANT"
+        ;;
+
+        aix*)
+        ax_pthread_check_macro="_THREAD_SAFE"
+        ;;
+
+        *)
+        ax_pthread_check_macro="--"
+        ;;
+esac
+AS_IF([test "x$ax_pthread_check_macro" = "x--"],
+      [ax_pthread_check_cond=0],
+      [ax_pthread_check_cond="!defined($ax_pthread_check_macro)"])
+
+# Are we compiling with Clang?
+
+AC_CACHE_CHECK([whether $CC is Clang],
+    [ax_cv_PTHREAD_CLANG],
+    [ax_cv_PTHREAD_CLANG=no
+     # Note that Autoconf sets GCC=yes for Clang as well as GCC
+     if test "x$GCC" = "xyes"; then
+        AC_EGREP_CPP([AX_PTHREAD_CC_IS_CLANG],
+            [/* Note: Clang 2.7 lacks __clang_[a-z]+__ */
+#            if defined(__clang__) && defined(__llvm__)
+             AX_PTHREAD_CC_IS_CLANG
+#            endif
+            ],
+            [ax_cv_PTHREAD_CLANG=yes])
+     fi
+    ])
+ax_pthread_clang="$ax_cv_PTHREAD_CLANG"
+
+ax_pthread_clang_warning=no
+
+# Clang needs special handling, because older versions handle the -pthread
+# option in a rather... idiosyncratic way
+
+if test "x$ax_pthread_clang" = "xyes"; then
+
+        # Clang takes -pthread; it has never supported any other flag
+
+        # (Note 1: This will need to be revisited if a system that Clang
+        # supports has POSIX threads in a separate library.  This tends not
+        # to be the way of modern systems, but it's conceivable.)
+
+        # (Note 2: On some systems, notably Darwin, -pthread is not needed
+        # to get POSIX threads support; the API is always present and
+        # active.  We could reasonably leave PTHREAD_CFLAGS empty.  But
+        # -pthread does define _REENTRANT, and while the Darwin headers
+        # ignore this macro, third-party headers might not.)
+
+        PTHREAD_CFLAGS="-pthread"
+        PTHREAD_LIBS=
+
+        ax_pthread_ok=yes
+
+        # However, older versions of Clang make a point of warning the user
+        # that, in an invocation where only linking and no compilation is
+        # taking place, the -pthread option has no effect ("argument unused
+        # during compilation").  They expect -pthread to be passed in only
+        # when source code is being compiled.
+        #
+        # Problem is, this is at odds with the way Automake and most other
+        # C build frameworks function, which is that the same flags used in
+        # compilation (CFLAGS) are also used in linking.  Many systems
+        # supported by AX_PTHREAD require exactly this for POSIX threads
+        # support, and in fact it is often not straightforward to specify a
+        # flag that is used only in the compilation phase and not in
+        # linking.  Such a scenario is extremely rare in practice.
+        #
+        # Even though use of the -pthread flag in linking would only print
+        # a warning, this can be a nuisance for well-run software projects
+        # that build with -Werror.  So if the active version of Clang has
+        # this misfeature, we search for an option to squash it.
+
+        AC_CACHE_CHECK([whether Clang needs flag to prevent "argument unused" warning when linking with -pthread],
+            [ax_cv_PTHREAD_CLANG_NO_WARN_FLAG],
+            [ax_cv_PTHREAD_CLANG_NO_WARN_FLAG=unknown
+             # Create an alternate version of $ac_link that compiles and
+             # links in two steps (.c -> .o, .o -> exe) instead of one
+             # (.c -> exe), because the warning occurs only in the second
+             # step
+             ax_pthread_save_ac_link="$ac_link"
+             ax_pthread_sed='s/conftest\.\$ac_ext/conftest.$ac_objext/g'
+             ax_pthread_link_step=`$as_echo "$ac_link" | sed "$ax_pthread_sed"`
+             ax_pthread_2step_ac_link="($ac_compile) && (echo ==== >&5) && ($ax_pthread_link_step)"
+             ax_pthread_save_CFLAGS="$CFLAGS"
+             for ax_pthread_try in '' -Qunused-arguments -Wno-unused-command-line-argument unknown; do
+                AS_IF([test "x$ax_pthread_try" = "xunknown"], [break])
+                CFLAGS="-Werror -Wunknown-warning-option $ax_pthread_try -pthread $ax_pthread_save_CFLAGS"
+                ac_link="$ax_pthread_save_ac_link"
+                AC_LINK_IFELSE([AC_LANG_SOURCE([[int main(void){return 0;}]])],
+                    [ac_link="$ax_pthread_2step_ac_link"
+                     AC_LINK_IFELSE([AC_LANG_SOURCE([[int main(void){return 0;}]])],
+                         [break])
+                    ])
+             done
+             ac_link="$ax_pthread_save_ac_link"
+             CFLAGS="$ax_pthread_save_CFLAGS"
+             AS_IF([test "x$ax_pthread_try" = "x"], [ax_pthread_try=no])
+             ax_cv_PTHREAD_CLANG_NO_WARN_FLAG="$ax_pthread_try"
+            ])
+
+        case "$ax_cv_PTHREAD_CLANG_NO_WARN_FLAG" in
+                no | unknown) ;;
+                *) PTHREAD_CFLAGS="$ax_cv_PTHREAD_CLANG_NO_WARN_FLAG $PTHREAD_CFLAGS" ;;
+        esac
+
+fi # $ax_pthread_clang = yes
+
+if test "x$ax_pthread_ok" = "xno"; then
+for ax_pthread_try_flag in $ax_pthread_flags; do
+
+        case $ax_pthread_try_flag in
                none)
                AC_MSG_CHECKING([whether pthreads work without any flags])
                ;;

+                -mt,pthread)
+                AC_MSG_CHECKING([whether pthreads work with -mt -lpthread])
+                PTHREAD_CFLAGS="-mt"
+                PTHREAD_LIBS="-lpthread"
+                ;;
+
                -*)
-                AC_MSG_CHECKING([whether pthreads work with $flag])
-                PTHREAD_CFLAGS="$flag"
+                AC_MSG_CHECKING([whether pthreads work with $ax_pthread_try_flag])
+                PTHREAD_CFLAGS="$ax_pthread_try_flag"
                ;;

                pthread-config)
                AC_CHECK_PROG([ax_pthread_config], [pthread-config], [yes], [no])
-                if test x"$ax_pthread_config" = xno; then continue; fi
+                AS_IF([test "x$ax_pthread_config" = "xno"], [continue])
                PTHREAD_CFLAGS="`pthread-config --cflags`"
                PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
                ;;

                *)
-                AC_MSG_CHECKING([for the pthreads library -l$flag])
-                PTHREAD_LIBS="-l$flag"
+                AC_MSG_CHECKING([for the pthreads library -l$ax_pthread_try_flag])
+                PTHREAD_LIBS="-l$ax_pthread_try_flag"
                ;;
        esac

-        save_LIBS="$LIBS"
-        save_CFLAGS="$CFLAGS"
+        ax_pthread_save_CFLAGS="$CFLAGS"
+        ax_pthread_save_LIBS="$LIBS"
+        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
        LIBS="$PTHREAD_LIBS $LIBS"
-        CFLAGS="$CFLAGS $PTHREAD_CFLAGS $ax_pthread_extra_flags"

        # Check for various functions.  We must include pthread.h,
        # since some functions may be macros.  (On the Sequent, we
@@ -218,7 +366,11 @@ for flag in $ax_pthread_flags; do
        # pthread_cleanup_push because it is one of the few pthread
        # functions on Solaris that doesn't have a non-functional libc stub.
        # We try pthread_create on general principles.
+
        AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>
+#                       if $ax_pthread_check_cond
+#                        error "$ax_pthread_check_macro must be defined"
+#                       endif
                        static void routine(void *a) { a = 0; }
                        static void *start_routine(void *a) { return a; }],
                       [pthread_t th; pthread_attr_t attr;
@@ -227,16 +379,14 @@ for flag in $ax_pthread_flags; do
                        pthread_attr_init(&attr);
                        pthread_cleanup_push(routine, 0);
                        pthread_cleanup_pop(0) /* ; */])],
-                [ax_pthread_ok=yes],
-                [])
+            [ax_pthread_ok=yes],
+            [])

-        LIBS="$save_LIBS"
-        CFLAGS="$save_CFLAGS"
+        CFLAGS="$ax_pthread_save_CFLAGS"
+        LIBS="$ax_pthread_save_LIBS"

        AC_MSG_RESULT([$ax_pthread_ok])
-        if test "x$ax_pthread_ok" = xyes; then
-                break;
-        fi
+        AS_IF([test "x$ax_pthread_ok" = "xyes"], [break])

        PTHREAD_LIBS=""
        PTHREAD_CFLAGS=""
@@ -244,71 +394,74 @@ done
 fi

 # Various other checks:
-if test "x$ax_pthread_ok" = xyes; then
-        save_LIBS="$LIBS"
-        LIBS="$PTHREAD_LIBS $LIBS"
-        save_CFLAGS="$CFLAGS"
+if test "x$ax_pthread_ok" = "xyes"; then
+        ax_pthread_save_CFLAGS="$CFLAGS"
+        ax_pthread_save_LIBS="$LIBS"
        CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
+        LIBS="$PTHREAD_LIBS $LIBS"

        # Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
-        AC_MSG_CHECKING([for joinable pthread attribute])
-        attr_name=unknown
-        for attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
-            AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>],
-                           [int attr = $attr; return attr /* ; */])],
-                [attr_name=$attr; break],
-                [])
-        done
-        AC_MSG_RESULT([$attr_name])
-        if test "$attr_name" != PTHREAD_CREATE_JOINABLE; then
-            AC_DEFINE_UNQUOTED([PTHREAD_CREATE_JOINABLE], [$attr_name],
-                               [Define to necessary symbol if this constant
-                                uses a non-standard name on your system.])
-        fi
+        AC_CACHE_CHECK([for joinable pthread attribute],
+            [ax_cv_PTHREAD_JOINABLE_ATTR],
+            [ax_cv_PTHREAD_JOINABLE_ATTR=unknown
+             for ax_pthread_attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
+                 AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>],
+                                                 [int attr = $ax_pthread_attr; return attr /* ; */])],
+                                [ax_cv_PTHREAD_JOINABLE_ATTR=$ax_pthread_attr; break],
+                                [])
+             done
+            ])
+        AS_IF([test "x$ax_cv_PTHREAD_JOINABLE_ATTR" != "xunknown" && \
+               test "x$ax_cv_PTHREAD_JOINABLE_ATTR" != "xPTHREAD_CREATE_JOINABLE" && \
+               test "x$ax_pthread_joinable_attr_defined" != "xyes"],
+              [AC_DEFINE_UNQUOTED([PTHREAD_CREATE_JOINABLE],
+                                  [$ax_cv_PTHREAD_JOINABLE_ATTR],
+                                  [Define to necessary symbol if this constant
+                                   uses a non-standard name on your system.])
+               ax_pthread_joinable_attr_defined=yes
+              ])

-        AC_MSG_CHECKING([if more special flags are required for pthreads])
-        flag=no
-        case ${host_os} in
-            aix* | freebsd* | darwin*) flag="-D_THREAD_SAFE";;
-            osf* | hpux*) flag="-D_REENTRANT";;
-            solaris*)
-            if test "$GCC" = "yes"; then
-                flag="-D_REENTRANT"
-            else
-                # TODO: What about Clang on Solaris?
-                flag="-mt -D_REENTRANT"
-            fi
-            ;;
-        esac
-        AC_MSG_RESULT([$flag])
-        if test "x$flag" != xno; then
-            PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS"
-        fi
+        AC_CACHE_CHECK([whether more special flags are required for pthreads],
+            [ax_cv_PTHREAD_SPECIAL_FLAGS],
+            [ax_cv_PTHREAD_SPECIAL_FLAGS=no
+             case $host_os in
+             solaris*)
+             ax_cv_PTHREAD_SPECIAL_FLAGS="-D_POSIX_PTHREAD_SEMANTICS"
+             ;;
+             esac
+            ])
+        AS_IF([test "x$ax_cv_PTHREAD_SPECIAL_FLAGS" != "xno" && \
+               test "x$ax_pthread_special_flags_added" != "xyes"],
+              [PTHREAD_CFLAGS="$ax_cv_PTHREAD_SPECIAL_FLAGS $PTHREAD_CFLAGS"
+               ax_pthread_special_flags_added=yes])

        AC_CACHE_CHECK([for PTHREAD_PRIO_INHERIT],
-            [ax_cv_PTHREAD_PRIO_INHERIT], [
-                AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]],
-                                                [[int i = PTHREAD_PRIO_INHERIT;]])],
-                    [ax_cv_PTHREAD_PRIO_INHERIT=yes],
-                    [ax_cv_PTHREAD_PRIO_INHERIT=no])
+            [ax_cv_PTHREAD_PRIO_INHERIT],
+            [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]],
+                                             [[int i = PTHREAD_PRIO_INHERIT;]])],
+                            [ax_cv_PTHREAD_PRIO_INHERIT=yes],
+                            [ax_cv_PTHREAD_PRIO_INHERIT=no])
            ])
-        AS_IF([test "x$ax_cv_PTHREAD_PRIO_INHERIT" = "xyes"],
-            [AC_DEFINE([HAVE_PTHREAD_PRIO_INHERIT], [1], [Have PTHREAD_PRIO_INHERIT.])])
+        AS_IF([test "x$ax_cv_PTHREAD_PRIO_INHERIT" = "xyes" && \
+               test "x$ax_pthread_prio_inherit_defined" != "xyes"],
+              [AC_DEFINE([HAVE_PTHREAD_PRIO_INHERIT], [1], [Have PTHREAD_PRIO_INHERIT.])
+               ax_pthread_prio_inherit_defined=yes
+              ])

-        LIBS="$save_LIBS"
-        CFLAGS="$save_CFLAGS"
+        CFLAGS="$ax_pthread_save_CFLAGS"
+        LIBS="$ax_pthread_save_LIBS"

        # More AIX lossage: compile with *_r variant
-        if test "x$GCC" != xyes; then
+        if test "x$GCC" != "xyes"; then
            case $host_os in
                aix*)
                AS_CASE(["x/$CC"],
-                  [x*/c89|x*/c89_128|x*/c99|x*/c99_128|x*/cc|x*/cc128|x*/xlc|x*/xlc_v6|x*/xlc128|x*/xlc128_v6],
-                  [#handle absolute path differently from PATH based program lookup
-                   AS_CASE(["x$CC"],
-                     [x/*],
-                     [AS_IF([AS_EXECUTABLE_P([${CC}_r])],[PTHREAD_CC="${CC}_r"])],
-                     [AC_CHECK_PROGS([PTHREAD_CC],[${CC}_r],[$CC])])])
+                    [x*/c89|x*/c89_128|x*/c99|x*/c99_128|x*/cc|x*/cc128|x*/xlc|x*/xlc_v6|x*/xlc128|x*/xlc128_v6],
+                    [#handle absolute path differently from PATH based program lookup
+                     AS_CASE(["x$CC"],
+                         [x/*],
+                         [AS_IF([AS_EXECUTABLE_P([${CC}_r])],[PTHREAD_CC="${CC}_r"])],
+                         [AC_CHECK_PROGS([PTHREAD_CC],[${CC}_r],[$CC])])])
                ;;
            esac
        fi
@@ -321,7 +474,7 @@ AC_SUBST([PTHREAD_CFLAGS])
 AC_SUBST([PTHREAD_CC])

 # Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
-if test x"$ax_pthread_ok" = xyes; then
+if test "x$ax_pthread_ok" = "xyes"; then
        ifelse([$1],,[AC_DEFINE([HAVE_PTHREAD],[1],[Define if you have POSIX threads libraries and header files.])],[$1])
        :
 else
--- a/build-aux/m4/bitcoin_find_bdb48.m4
+++ b/build-aux/m4/bitcoin_find_bdb48.m4
@@ -1,66 +1,78 @@
+dnl Copyright (c) 2013-2015 The Bitcoin Core developers
+dnl Distributed under the MIT software license, see the accompanying
+dnl file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 AC_DEFUN([BITCOIN_FIND_BDB48],[
-  AC_MSG_CHECKING([for Berkeley DB C++ headers])
-  BDB_CPPFLAGS=
-  BDB_LIBS=
-  bdbpath=X
-  bdb48path=X
-  bdbdirlist=
-  for _vn in 4.8 48 4 5 ''; do
-    for _pfx in b lib ''; do
-      bdbdirlist="$bdbdirlist ${_pfx}db${_vn}"
+  AC_ARG_VAR(BDB_CFLAGS, [C compiler flags for BerkeleyDB, bypasses autodetection])
+  AC_ARG_VAR(BDB_LIBS, [Linker flags for BerkeleyDB, bypasses autodetection])
+
+  if test "x$BDB_CFLAGS" = "x"; then
+    AC_MSG_CHECKING([for Berkeley DB C++ headers])
+    BDB_CPPFLAGS=
+    bdbpath=X
+    bdb48path=X
+    bdbdirlist=
+    for _vn in 4.8 48 4 5 5.3 ''; do
+      for _pfx in b lib ''; do
+        bdbdirlist="$bdbdirlist ${_pfx}db${_vn}"
+      done
    done
-  done
-  for searchpath in $bdbdirlist ''; do
-    test -n "${searchpath}" && searchpath="${searchpath}/"
-    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
-      #include <${searchpath}db_cxx.h>
-    ]],[[
-      #if !((DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR >= 8) || DB_VERSION_MAJOR > 4)
-        #error "failed to find bdb 4.8+"
-      #endif
-    ]])],[
-      if test "x$bdbpath" = "xX"; then
-        bdbpath="${searchpath}"
-      fi
-    ],[
-      continue
-    ])
-    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
-      #include <${searchpath}db_cxx.h>
-    ]],[[
-      #if !(DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR == 8)
-        #error "failed to find bdb 4.8"
-      #endif
-    ]])],[
-      bdb48path="${searchpath}"
-      break
-    ],[])
-  done
-  if test "x$bdbpath" = "xX"; then
-    AC_MSG_RESULT([no])
-    AC_MSG_ERROR([libdb_cxx headers missing, Bitcoin Core requires this library for wallet functionality (--disable-wallet to disable wallet functionality)])
-  elif test "x$bdb48path" = "xX"; then
-    BITCOIN_SUBDIR_TO_INCLUDE(BDB_CPPFLAGS,[${bdbpath}],db_cxx)
-    AC_ARG_WITH([incompatible-bdb],[AS_HELP_STRING([--with-incompatible-bdb], [allow using a bdb version other than 4.8])],[
-      AC_MSG_WARN([Found Berkeley DB other than 4.8; wallets opened by this build will not be portable!])
-    ],[
-      AC_MSG_ERROR([Found Berkeley DB other than 4.8, required for portable wallets (--with-incompatible-bdb to ignore or --disable-wallet to disable wallet functionality)])
-    ])
+    for searchpath in $bdbdirlist ''; do
+      test -n "${searchpath}" && searchpath="${searchpath}/"
+      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+        #include <${searchpath}db_cxx.h>
+      ]],[[
+        #if !((DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR >= 8) || DB_VERSION_MAJOR > 4)
+          #error "failed to find bdb 4.8+"
+        #endif
+      ]])],[
+        if test "x$bdbpath" = "xX"; then
+          bdbpath="${searchpath}"
+        fi
+      ],[
+        continue
+      ])
+      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+        #include <${searchpath}db_cxx.h>
+      ]],[[
+        #if !(DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR == 8)
+          #error "failed to find bdb 4.8"
+        #endif
+      ]])],[
+        bdb48path="${searchpath}"
+        break
+      ],[])
+    done
+    if test "x$bdbpath" = "xX"; then
+      AC_MSG_RESULT([no])
+      AC_MSG_ERROR([libdb_cxx headers missing, ]AC_PACKAGE_NAME[ requires this library for wallet functionality (--disable-wallet to disable wallet functionality)])
+    elif test "x$bdb48path" = "xX"; then
+      BITCOIN_SUBDIR_TO_INCLUDE(BDB_CPPFLAGS,[${bdbpath}],db_cxx)
+      AC_ARG_WITH([incompatible-bdb],[AS_HELP_STRING([--with-incompatible-bdb], [allow using a bdb version other than 4.8])],[
+        AC_MSG_WARN([Found Berkeley DB other than 4.8; wallets opened by this build will not be portable!])
+      ],[
+        AC_MSG_ERROR([Found Berkeley DB other than 4.8, required for portable wallets (--with-incompatible-bdb to ignore or --disable-wallet to disable wallet functionality)])
+      ])
+    else
+      BITCOIN_SUBDIR_TO_INCLUDE(BDB_CPPFLAGS,[${bdb48path}],db_cxx)
+      bdbpath="${bdb48path}"
+    fi
  else
-    BITCOIN_SUBDIR_TO_INCLUDE(BDB_CPPFLAGS,[${bdb48path}],db_cxx)
-    bdbpath="${bdb48path}"
+    BDB_CPPFLAGS=${BDB_CFLAGS}
  fi
  AC_SUBST(BDB_CPPFLAGS)
  
-  # TODO: Ideally this could find the library version and make sure it matches the headers being used
-  for searchlib in db_cxx-4.8 db_cxx; do
-    AC_CHECK_LIB([$searchlib],[main],[
-      BDB_LIBS="-l${searchlib}"
-      break
-    ])
-  done
  if test "x$BDB_LIBS" = "x"; then
-      AC_MSG_ERROR([libdb_cxx missing, Bitcoin Core requires this library for wallet functionality (--disable-wallet to disable wallet functionality)])
+    # TODO: Ideally this could find the library version and make sure it matches the headers being used
+    for searchlib in db_cxx-4.8 db_cxx db4_cxx; do
+      AC_CHECK_LIB([$searchlib],[main],[
+        BDB_LIBS="-l${searchlib}"
+        break
+      ])
+    done
+    if test "x$BDB_LIBS" = "x"; then
+        AC_MSG_ERROR([libdb_cxx missing, ]AC_PACKAGE_NAME[ requires this library for wallet functionality (--disable-wallet to disable wallet functionality)])
+    fi
  fi
  AC_SUBST(BDB_LIBS)
 ])
--- a/build-aux/m4/bitcoin_qt.m4
+++ b/build-aux/m4/bitcoin_qt.m4
@@ -1,8 +1,12 @@
+dnl Copyright (c) 2013-2016 The Bitcoin Core developers
+dnl Distributed under the MIT software license, see the accompanying
+dnl file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 dnl Helper for cases where a qt dependency is not met.
 dnl Output: If qt version is auto, set bitcoin_enable_qt to false. Else, exit.
 AC_DEFUN([BITCOIN_QT_FAIL],[
-  if test "x$bitcoin_qt_want_version" = "xauto" && test x$bitcoin_qt_force != xyes; then
-    if test x$bitcoin_enable_qt != xno; then
+  if test "x$bitcoin_qt_want_version" = xauto && test "x$bitcoin_qt_force" != xyes; then
+    if test "x$bitcoin_enable_qt" != xno; then
      AC_MSG_WARN([$1; bitcoin-qt frontend will not be built])
    fi
    bitcoin_enable_qt=no
@@ -13,7 +17,7 @@ AC_DEFUN([BITCOIN_QT_FAIL],[
 ])

 AC_DEFUN([BITCOIN_QT_CHECK],[
-  if test "x$bitcoin_enable_qt" != "xno" && test x$bitcoin_qt_want_version != xno; then
+  if test "x$bitcoin_enable_qt" != xno && test "x$bitcoin_qt_want_version" != xno; then
    true
    $1
  else
@@ -31,12 +35,12 @@ dnl Inputs: $4: If "yes", don't fail if $2 is not found.
 dnl Output: $1 is set to the path of $2 if found. $2 are searched in order.
 AC_DEFUN([BITCOIN_QT_PATH_PROGS],[
  BITCOIN_QT_CHECK([
-    if test "x$3" != "x"; then
+    if test "x$3" != x; then
      AC_PATH_PROGS($1,$2,,$3)
    else
      AC_PATH_PROGS($1,$2)
    fi
-    if test "x$$1" = "x" && test "x$4" != "xyes"; then
+    if test "x$$1" = x && test "x$4" != xyes; then
      BITCOIN_QT_FAIL([$1 not found])
    fi
  ])
@@ -53,7 +57,7 @@ AC_DEFUN([BITCOIN_QT_INIT],[
    [build bitcoin-qt GUI (default=auto, qt5 tried first)])],
    [
     bitcoin_qt_want_version=$withval
-     if test x$bitcoin_qt_want_version = xyes; then
+     if test "x$bitcoin_qt_want_version" = xyes; then
       bitcoin_qt_force=yes
       bitcoin_qt_want_version=auto
     fi
@@ -85,11 +89,11 @@ dnl Outputs: bitcoin_enable_qt, bitcoin_enable_qt_dbus, bitcoin_enable_qt_test
 AC_DEFUN([BITCOIN_QT_CONFIGURE],[
  use_pkgconfig=$1

-  if test x$use_pkgconfig = x; then
+  if test "x$use_pkgconfig" = x; then
    use_pkgconfig=yes
  fi

-  if test x$use_pkgconfig = xyes; then
+  if test "x$use_pkgconfig" = xyes; then
    BITCOIN_QT_CHECK([_BITCOIN_QT_FIND_LIBS_WITH_PKGCONFIG([$2])])
  else
    BITCOIN_QT_CHECK([_BITCOIN_QT_FIND_LIBS_WITHOUT_PKGCONFIG])
@@ -109,37 +113,45 @@ AC_DEFUN([BITCOIN_QT_CONFIGURE],[
  TEMP_CXXFLAGS=$CXXFLAGS
  CPPFLAGS="$QT_INCLUDES $CPPFLAGS"
  CXXFLAGS="$PIC_FLAGS $CXXFLAGS"
-  if test x$bitcoin_qt_got_major_vers = x5; then
+  if test "x$bitcoin_qt_got_major_vers" = x5; then
    _BITCOIN_QT_IS_STATIC
-    if test x$bitcoin_cv_static_qt = xyes; then
+    if test "x$bitcoin_cv_static_qt" = xyes; then
      _BITCOIN_QT_FIND_STATIC_PLUGINS
      AC_DEFINE(QT_STATICPLUGIN, 1, [Define this symbol if qt plugins are static])
-      AC_CACHE_CHECK(for Qt < 5.4, bitcoin_cv_need_acc_widget,[AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
-          [[#include <QtCore>]],[[
-          #if QT_VERSION >= 0x050400
-          choke;
-          #endif
+      AC_CACHE_CHECK(for Qt < 5.4, bitcoin_cv_need_acc_widget,[
+        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+            #include <QtCore/qconfig.h>
+            #ifndef QT_VERSION
+            #  include <QtCore/qglobal.h>
+            #endif
+          ]],
+          [[
+            #if QT_VERSION >= 0x050400
+            choke
+            #endif
          ]])],
        [bitcoin_cv_need_acc_widget=yes],
        [bitcoin_cv_need_acc_widget=no])
      ])
-      if test "x$bitcoin_cv_need_acc_widget" = "xyes"; then
+      if test "x$bitcoin_cv_need_acc_widget" = xyes; then
        _BITCOIN_QT_CHECK_STATIC_PLUGINS([Q_IMPORT_PLUGIN(AccessibleFactory)], [-lqtaccessiblewidgets])
      fi
-      if test x$TARGET_OS = xwindows; then
+      _BITCOIN_QT_CHECK_STATIC_PLUGINS([Q_IMPORT_PLUGIN(QMinimalIntegrationPlugin)],[-lqminimal])
+      AC_DEFINE(QT_QPA_PLATFORM_MINIMAL, 1, [Define this symbol if the minimal qt platform exists])
+      if test "x$TARGET_OS" = xwindows; then
        _BITCOIN_QT_CHECK_STATIC_PLUGINS([Q_IMPORT_PLUGIN(QWindowsIntegrationPlugin)],[-lqwindows])
        AC_DEFINE(QT_QPA_PLATFORM_WINDOWS, 1, [Define this symbol if the qt platform is windows])
-      elif test x$TARGET_OS = xlinux; then
+      elif test "x$TARGET_OS" = xlinux; then
        _BITCOIN_QT_CHECK_STATIC_PLUGINS([Q_IMPORT_PLUGIN(QXcbIntegrationPlugin)],[-lqxcb -lxcb-static])
        AC_DEFINE(QT_QPA_PLATFORM_XCB, 1, [Define this symbol if the qt platform is xcb])
-      elif test x$TARGET_OS = xdarwin; then
+      elif test "x$TARGET_OS" = xdarwin; then
        AX_CHECK_LINK_FLAG([[-framework IOKit]],[QT_LIBS="$QT_LIBS -framework IOKit"],[AC_MSG_ERROR(could not iokit framework)])
        _BITCOIN_QT_CHECK_STATIC_PLUGINS([Q_IMPORT_PLUGIN(QCocoaIntegrationPlugin)],[-lqcocoa])
        AC_DEFINE(QT_QPA_PLATFORM_COCOA, 1, [Define this symbol if the qt platform is cocoa])
      fi
    fi
  else
-    if test x$TARGET_OS = xwindows; then
+    if test "x$TARGET_OS" = xwindows; then
      AC_DEFINE(QT_STATICPLUGIN, 1, [Define this symbol if qt plugins are static])
      _BITCOIN_QT_CHECK_STATIC_PLUGINS([
         Q_IMPORT_PLUGIN(qcncodecs)
@@ -154,24 +166,29 @@ AC_DEFUN([BITCOIN_QT_CONFIGURE],[
  CXXFLAGS=$TEMP_CXXFLAGS
  ])

-  if test x$use_pkgconfig$qt_bin_path = xyes; then
-    if test x$bitcoin_qt_got_major_vers = x5; then
+  if test "x$use_pkgconfig$qt_bin_path" = xyes; then
+    if test "x$bitcoin_qt_got_major_vers" = x5; then
      qt_bin_path="`$PKG_CONFIG --variable=host_bins Qt5Core 2>/dev/null`"
    fi
  fi

-  if test x$use_hardening != xno; then
+  if test "x$use_hardening" != xno; then
    BITCOIN_QT_CHECK([
    AC_MSG_CHECKING(whether -fPIE can be used with this Qt config)
    TEMP_CPPFLAGS=$CPPFLAGS
    TEMP_CXXFLAGS=$CXXFLAGS
    CPPFLAGS="$QT_INCLUDES $CPPFLAGS"
    CXXFLAGS="$PIE_FLAGS $CXXFLAGS"
-    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <QtCore/qconfig.h>]],
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+        #include <QtCore/qconfig.h>
+        #ifndef QT_VERSION
+        #  include <QtCore/qglobal.h>
+        #endif
+      ]],
      [[
-          #if defined(QT_REDUCE_RELOCATIONS)
-              choke;
-          #endif
+        #if defined(QT_REDUCE_RELOCATIONS)
+        choke
+        #endif
      ]])],
      [ AC_MSG_RESULT(yes); QT_PIE_FLAGS=$PIE_FLAGS ],
      [ AC_MSG_RESULT(no); QT_PIE_FLAGS=$PIC_FLAGS]
@@ -184,11 +201,16 @@ AC_DEFUN([BITCOIN_QT_CONFIGURE],[
    AC_MSG_CHECKING(whether -fPIC is needed with this Qt config)
    TEMP_CPPFLAGS=$CPPFLAGS
    CPPFLAGS="$QT_INCLUDES $CPPFLAGS"
-    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <QtCore/qconfig.h>]],
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+        #include <QtCore/qconfig.h>
+        #ifndef QT_VERSION
+        #  include <QtCore/qglobal.h>
+        #endif
+      ]],
      [[
-          #if defined(QT_REDUCE_RELOCATIONS)
-              choke;
-          #endif
+        #if defined(QT_REDUCE_RELOCATIONS)
+        choke
+        #endif
      ]])],
      [ AC_MSG_RESULT(no)],
      [ AC_MSG_RESULT(yes); QT_PIE_FLAGS=$PIC_FLAGS]
@@ -220,22 +242,22 @@ AC_DEFUN([BITCOIN_QT_CONFIGURE],[


  dnl enable qt support
-  AC_MSG_CHECKING(whether to build Bitcoin Core GUI)
+  AC_MSG_CHECKING(whether to build ]AC_PACKAGE_NAME[ GUI)
  BITCOIN_QT_CHECK([
    bitcoin_enable_qt=yes
    bitcoin_enable_qt_test=yes
-    if test x$have_qt_test = xno; then
+    if test "x$have_qt_test" = xno; then
      bitcoin_enable_qt_test=no
    fi
    bitcoin_enable_qt_dbus=no
-    if test x$use_dbus != xno && test x$have_qt_dbus = xyes; then
+    if test "x$use_dbus" != xno && test "x$have_qt_dbus" = xyes; then
      bitcoin_enable_qt_dbus=yes
    fi
-    if test x$use_dbus = xyes && test x$have_qt_dbus = xno; then
-      AC_MSG_ERROR("libQtDBus not found. Install libQtDBus or remove --with-qtdbus.")
+    if test "x$use_dbus" = xyes && test "x$have_qt_dbus" = xno; then
+      AC_MSG_ERROR([libQtDBus not found. Install libQtDBus or remove --with-qtdbus.])
    fi
-    if test x$LUPDATE = x; then
-      AC_MSG_WARN("lupdate is required to update qt translations")
+    if test "x$LUPDATE" = x; then
+      AC_MSG_WARN([lupdate is required to update qt translations])
    fi
  ],[
    bitcoin_enable_qt=no
@@ -263,13 +285,15 @@ dnl Requires: INCLUDES must be populated as necessary.
 dnl Output: bitcoin_cv_qt5=yes|no
 AC_DEFUN([_BITCOIN_QT_CHECK_QT5],[
  AC_CACHE_CHECK(for Qt 5, bitcoin_cv_qt5,[
-  AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
-    [[#include <QtCore>]],
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+      #include <QtCore/qconfig.h>
+      #ifndef QT_VERSION
+      #  include <QtCore/qglobal.h>
+      #endif
+    ]],
    [[
      #if QT_VERSION < 0x050000
-      choke me
-      #else
-      return 0;
+      choke
      #endif
    ]])],
    [bitcoin_cv_qt5=yes],
@@ -283,19 +307,21 @@ dnl Output: bitcoin_cv_static_qt=yes|no
 dnl Output: Defines QT_STATICPLUGIN if plugins are static.
 AC_DEFUN([_BITCOIN_QT_IS_STATIC],[
  AC_CACHE_CHECK(for static Qt, bitcoin_cv_static_qt,[
-  AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
-    [[#include <QtCore>]],
+  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+      #include <QtCore/qconfig.h>
+      #ifndef QT_VERSION
+      #  include <QtCore/qglobal.h>
+      #endif
+    ]],
    [[
-      #if defined(QT_STATIC)
-      return 0;
-      #else
-      choke me
+      #if !defined(QT_STATIC)
+      choke
      #endif
    ]])],
    [bitcoin_cv_static_qt=yes],
    [bitcoin_cv_static_qt=no])
  ])
-  if test xbitcoin_cv_static_qt = xyes; then
+  if test "x$bitcoin_cv_static_qt" = xyes; then
    AC_DEFINE(QT_STATICPLUGIN, 1, [Define this symbol for static Qt plugins])
  fi
 ])
@@ -324,28 +350,50 @@ dnl Inputs: bitcoin_qt_got_major_vers. 4 or 5.
 dnl Inputs: qt_plugin_path. optional.
 dnl Outputs: QT_LIBS is appended
 AC_DEFUN([_BITCOIN_QT_FIND_STATIC_PLUGINS],[
-  if test x$bitcoin_qt_got_major_vers = x5; then
-      if test x$qt_plugin_path != x; then
+  if test "x$bitcoin_qt_got_major_vers" = x5; then
+      if test "x$qt_plugin_path" != x; then
        QT_LIBS="$QT_LIBS -L$qt_plugin_path/platforms"
        if test -d "$qt_plugin_path/accessible"; then
          QT_LIBS="$QT_LIBS -L$qt_plugin_path/accessible"
        fi
      fi
+     if test "x$use_pkgconfig" = xyes; then
+     : dnl
     m4_ifdef([PKG_CHECK_MODULES],[
-     if test x$use_pkgconfig = xyes; then
       PKG_CHECK_MODULES([QTPLATFORM], [Qt5PlatformSupport], [QT_LIBS="$QTPLATFORM_LIBS $QT_LIBS"])
-       if test x$TARGET_OS = xlinux; then
+       if test "x$TARGET_OS" = xlinux; then
         PKG_CHECK_MODULES([X11XCB], [x11-xcb], [QT_LIBS="$X11XCB_LIBS $QT_LIBS"])
         if ${PKG_CONFIG} --exists "Qt5Core >= 5.5" 2>/dev/null; then
           PKG_CHECK_MODULES([QTXCBQPA], [Qt5XcbQpa], [QT_LIBS="$QTXCBQPA_LIBS $QT_LIBS"])
         fi
-       elif test x$TARGET_OS = xdarwin; then
+       elif test "x$TARGET_OS" = xdarwin; then
         PKG_CHECK_MODULES([QTPRINT], [Qt5PrintSupport], [QT_LIBS="$QTPRINT_LIBS $QT_LIBS"])
       fi
-     fi
     ])
+     else
+       if test "x$TARGET_OS" = xwindows; then
+         AC_CACHE_CHECK(for Qt >= 5.6, bitcoin_cv_need_platformsupport,[
+           AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+               #include <QtCore/qconfig.h>
+               #ifndef QT_VERSION
+               #  include <QtCore/qglobal.h>
+               #endif
+             ]],
+             [[
+               #if QT_VERSION < 0x050600
+               choke
+               #endif
+             ]])],
+           [bitcoin_cv_need_platformsupport=yes],
+           [bitcoin_cv_need_platformsupport=no])
+         ])
+         if test "x$bitcoin_cv_need_platformsupport" = xyes; then
+           BITCOIN_QT_CHECK(AC_CHECK_LIB([${QT_LIB_PREFIX}PlatformSupport],[main],,BITCOIN_QT_FAIL(lib${QT_LIB_PREFIX}PlatformSupport not found)))
+         fi
+       fi
+     fi
  else
-    if test x$qt_plugin_path != x; then
+    if test "x$qt_plugin_path" != x; then
      QT_LIBS="$QT_LIBS -L$qt_plugin_path/accessible"
      QT_LIBS="$QT_LIBS -L$qt_plugin_path/codecs"
    fi
@@ -363,10 +411,10 @@ dnl Outputs: have_qt_test and have_qt_dbus are set (if applicable) to yes|no.
 AC_DEFUN([_BITCOIN_QT_FIND_LIBS_WITH_PKGCONFIG],[
  m4_ifdef([PKG_CHECK_MODULES],[
  auto_priority_version=$1
-  if test x$auto_priority_version = x; then
+  if test "x$auto_priority_version" = x; then
    auto_priority_version=qt5
  fi
-    if test x$bitcoin_qt_want_version = xqt5 ||  ( test x$bitcoin_qt_want_version = xauto && test x$auto_priority_version = xqt5 ); then
+    if test "x$bitcoin_qt_want_version" = xqt5 ||  ( test "x$bitcoin_qt_want_version" = xauto && test "x$auto_priority_version" = xqt5 ); then
      QT_LIB_PREFIX=Qt5
      bitcoin_qt_got_major_vers=5
    else
@@ -376,28 +424,28 @@ AC_DEFUN([_BITCOIN_QT_FIND_LIBS_WITH_PKGCONFIG],[
    qt5_modules="Qt5Core Qt5Gui Qt5Network Qt5Widgets"
    qt4_modules="QtCore QtGui QtNetwork"
    BITCOIN_QT_CHECK([
-      if test x$bitcoin_qt_want_version = xqt5 || ( test x$bitcoin_qt_want_version = xauto && test x$auto_priority_version = xqt5 ); then
-        PKG_CHECK_MODULES([QT], [$qt5_modules], [QT_INCLUDES="$QT_CFLAGS"; have_qt=yes],[have_qt=no])
-      elif test x$bitcoin_qt_want_version = xqt4 || ( test x$bitcoin_qt_want_version = xauto && test x$auto_priority_version = xqt4 ); then
-        PKG_CHECK_MODULES([QT], [$qt4_modules], [QT_INCLUDES="$QT_CFLAGS"; have_qt=yes], [have_qt=no])
+      if test "x$bitcoin_qt_want_version" = xqt5 || ( test "x$bitcoin_qt_want_version" = xauto && test "x$auto_priority_version" = xqt5 ); then
+        PKG_CHECK_MODULES([QT5], [$qt5_modules], [QT_INCLUDES="$QT5_CFLAGS"; QT_LIBS="$QT5_LIBS" have_qt=yes],[have_qt=no])
+      elif test "x$bitcoin_qt_want_version" = xqt4 || ( test "x$bitcoin_qt_want_version" = xauto && test "x$auto_priority_version" = xqt4 ); then
+        PKG_CHECK_MODULES([QT4], [$qt4_modules], [QT_INCLUDES="$QT4_CFLAGS"; QT_LIBS="$QT4_LIBS" ; have_qt=yes], [have_qt=no])
      fi

      dnl qt version is set to 'auto' and the preferred version wasn't found. Now try the other.
-      if test x$have_qt = xno && test x$bitcoin_qt_want_version = xauto; then
-        if test x$auto_priority_version = x$qt5; then
-          PKG_CHECK_MODULES([QT], [$qt4_modules], [QT_INCLUDES="$QT_CFLAGS"; have_qt=yes; QT_LIB_PREFIX=Qt; bitcoin_qt_got_major_vers=4], [have_qt=no])
+      if test "x$have_qt" = xno && test "x$bitcoin_qt_want_version" = xauto; then
+        if test "x$auto_priority_version" = xqt5; then
+          PKG_CHECK_MODULES([QT4], [$qt4_modules], [QT_INCLUDES="$QT4_CFLAGS"; QT_LIBS="$QT4_LIBS" ; have_qt=yes; QT_LIB_PREFIX=Qt; bitcoin_qt_got_major_vers=4], [have_qt=no])
        else
-          PKG_CHECK_MODULES([QT], [$qt5_modules], [QT_INCLUDES="$QT_CFLAGS"; have_qt=yes; QT_LIB_PREFIX=Qt5; bitcoin_qt_got_major_vers=5], [have_qt=no])
+          PKG_CHECK_MODULES([QT5], [$qt5_modules], [QT_INCLUDES="$QT5_CFLAGS"; QT_LIBS="$QT5_LIBS" ; have_qt=yes; QT_LIB_PREFIX=Qt5; bitcoin_qt_got_major_vers=5], [have_qt=no])
        fi
      fi
-      if test x$have_qt != xyes; then
+      if test "x$have_qt" != xyes; then
        have_qt=no
        BITCOIN_QT_FAIL([Qt dependencies not found])
      fi
    ])
    BITCOIN_QT_CHECK([
      PKG_CHECK_MODULES([QT_TEST], [${QT_LIB_PREFIX}Test], [QT_TEST_INCLUDES="$QT_TEST_CFLAGS"; have_qt_test=yes], [have_qt_test=no])
-      if test x$use_dbus != xno; then
+      if test "x$use_dbus" != xno; then
        PKG_CHECK_MODULES([QT_DBUS], [${QT_LIB_PREFIX}DBus], [QT_DBUS_INCLUDES="$QT_DBUS_CFLAGS"; have_qt_dbus=yes], [have_qt_dbus=no])
      fi
    ])
@@ -418,7 +466,7 @@ AC_DEFUN([_BITCOIN_QT_FIND_LIBS_WITHOUT_PKGCONFIG],[
  CXXFLAGS="$PIC_FLAGS $CXXFLAGS"
  TEMP_LIBS="$LIBS"
  BITCOIN_QT_CHECK([
-    if test x$qt_include_path != x; then
+    if test "x$qt_include_path" != x; then
      QT_INCLUDES="-I$qt_include_path -I$qt_include_path/QtCore -I$qt_include_path/QtGui -I$qt_include_path/QtWidgets -I$qt_include_path/QtNetwork -I$qt_include_path/QtTest -I$qt_include_path/QtDBus"
      CPPFLAGS="$QT_INCLUDES $CPPFLAGS"
    fi
@@ -429,10 +477,10 @@ AC_DEFUN([_BITCOIN_QT_FIND_LIBS_WITHOUT_PKGCONFIG],[
  BITCOIN_QT_CHECK([AC_CHECK_HEADER([QLocalSocket],, BITCOIN_QT_FAIL(QtNetwork headers missing))])

  BITCOIN_QT_CHECK([
-    if test x$bitcoin_qt_want_version = xauto; then
+    if test "x$bitcoin_qt_want_version" = xauto; then
      _BITCOIN_QT_CHECK_QT5
    fi
-    if test x$bitcoin_cv_qt5 = xyes || test x$bitcoin_qt_want_version = xqt5; then
+    if test "x$bitcoin_cv_qt5" = xyes || test "x$bitcoin_qt_want_version" = xqt5; then
      QT_LIB_PREFIX=Qt5
      bitcoin_qt_got_major_vers=5
    else
@@ -443,40 +491,40 @@ AC_DEFUN([_BITCOIN_QT_FIND_LIBS_WITHOUT_PKGCONFIG],[

  BITCOIN_QT_CHECK([
    LIBS=
-    if test x$qt_lib_path != x; then
+    if test "x$qt_lib_path" != x; then
      LIBS="$LIBS -L$qt_lib_path"
    fi

-    if test x$TARGET_OS = xwindows; then
+    if test "x$TARGET_OS" = xwindows; then
      AC_CHECK_LIB([imm32],      [main],, BITCOIN_QT_FAIL(libimm32 not found))
    fi
  ])

  BITCOIN_QT_CHECK(AC_CHECK_LIB([z] ,[main],,AC_MSG_WARN([zlib not found. Assuming qt has it built-in])))
-  BITCOIN_QT_CHECK(AC_CHECK_LIB([png] ,[main],,AC_MSG_WARN([libpng not found. Assuming qt has it built-in])))
-  BITCOIN_QT_CHECK(AC_CHECK_LIB([jpeg] ,[main],,AC_MSG_WARN([libjpeg not found. Assuming qt has it built-in])))
+  BITCOIN_QT_CHECK(AC_SEARCH_LIBS([png_error] ,[qtpng png],,AC_MSG_WARN([libpng not found. Assuming qt has it built-in])))
+  BITCOIN_QT_CHECK(AC_SEARCH_LIBS([jpeg_create_decompress] ,[qtjpeg jpeg],,AC_MSG_WARN([libjpeg not found. Assuming qt has it built-in])))
  BITCOIN_QT_CHECK(AC_SEARCH_LIBS([pcre16_exec], [qtpcre pcre16],,AC_MSG_WARN([libpcre16 not found. Assuming qt has it built-in])))
  BITCOIN_QT_CHECK(AC_SEARCH_LIBS([hb_ot_tags_from_script] ,[qtharfbuzzng harfbuzz],,AC_MSG_WARN([libharfbuzz not found. Assuming qt has it built-in or support is disabled])))
-  BITCOIN_QT_CHECK(AC_CHECK_LIB([${QT_LIB_PREFIX}Core]   ,[main],,BITCOIN_QT_FAIL(lib$QT_LIB_PREFIXCore not found)))
-  BITCOIN_QT_CHECK(AC_CHECK_LIB([${QT_LIB_PREFIX}Gui]    ,[main],,BITCOIN_QT_FAIL(lib$QT_LIB_PREFIXGui not found)))
-  BITCOIN_QT_CHECK(AC_CHECK_LIB([${QT_LIB_PREFIX}Network],[main],,BITCOIN_QT_FAIL(lib$QT_LIB_PREFIXNetwork not found)))
-  if test x$bitcoin_qt_got_major_vers = x5; then
-    BITCOIN_QT_CHECK(AC_CHECK_LIB([${QT_LIB_PREFIX}Widgets],[main],,BITCOIN_QT_FAIL(lib$QT_LIB_PREFIXWidgets not found)))
+  BITCOIN_QT_CHECK(AC_CHECK_LIB([${QT_LIB_PREFIX}Core]   ,[main],,BITCOIN_QT_FAIL(lib${QT_LIB_PREFIX}Core not found)))
+  BITCOIN_QT_CHECK(AC_CHECK_LIB([${QT_LIB_PREFIX}Gui]    ,[main],,BITCOIN_QT_FAIL(lib${QT_LIB_PREFIX}Gui not found)))
+  BITCOIN_QT_CHECK(AC_CHECK_LIB([${QT_LIB_PREFIX}Network],[main],,BITCOIN_QT_FAIL(lib${QT_LIB_PREFIX}Network not found)))
+  if test "x$bitcoin_qt_got_major_vers" = x5; then
+    BITCOIN_QT_CHECK(AC_CHECK_LIB([${QT_LIB_PREFIX}Widgets],[main],,BITCOIN_QT_FAIL(lib${QT_LIB_PREFIX}Widgets not found)))
  fi
  QT_LIBS="$LIBS"
  LIBS="$TEMP_LIBS"

  BITCOIN_QT_CHECK([
    LIBS=
-    if test x$qt_lib_path != x; then
+    if test "x$qt_lib_path" != x; then
      LIBS="-L$qt_lib_path"
    fi
    AC_CHECK_LIB([${QT_LIB_PREFIX}Test],      [main],, have_qt_test=no)
    AC_CHECK_HEADER([QTest],, have_qt_test=no)
    QT_TEST_LIBS="$LIBS"
-    if test x$use_dbus != xno; then
+    if test "x$use_dbus" != xno; then
      LIBS=
-      if test x$qt_lib_path != x; then
+      if test "x$qt_lib_path" != x; then
        LIBS="-L$qt_lib_path"
      fi
      AC_CHECK_LIB([${QT_LIB_PREFIX}DBus],      [main],, have_qt_dbus=no)
--- a/build-aux/m4/bitcoin_subdir_to_include.m4
+++ b/build-aux/m4/bitcoin_subdir_to_include.m4
@@ -1,3 +1,7 @@
+dnl Copyright (c) 2013-2014 The Bitcoin Core developers
+dnl Distributed under the MIT software license, see the accompanying
+dnl file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 dnl BITCOIN_SUBDIR_TO_INCLUDE([CPPFLAGS-VARIABLE-NAME],[SUBDIRECTORY-NAME],[HEADER-FILE])
 dnl SUBDIRECTORY-NAME must end with a path separator
 AC_DEFUN([BITCOIN_SUBDIR_TO_INCLUDE],[
--- a/build-aux/m4/l_atomic.m4
+++ b/build-aux/m4/l_atomic.m4
@@ -0,0 +1,46 @@
+dnl Copyright (c) 2015 Tim Kosse <tim.kosse@filezilla-project.org>
+dnl Copying and distribution of this file, with or without modification, are
+dnl permitted in any medium without royalty provided the copyright notice
+dnl and this notice are preserved. This file is offered as-is, without any
+dnl warranty.
+
+# Some versions of gcc/libstdc++ require linking with -latomic if
+# using the C++ atomic library.
+#
+# Sourced from http://bugs.debian.org/797228
+
+m4_define([_CHECK_ATOMIC_testbody], [[
+  #include <atomic>
+  #include <cstdint>
+
+  int main() {
+    std::atomic<int64_t> a{};
+
+    int64_t v = 5;
+    int64_t r = a.fetch_add(v);
+    return static_cast<int>(r);
+  }
+]])
+
+AC_DEFUN([CHECK_ATOMIC], [
+
+  AC_LANG_PUSH(C++)
+
+  AC_MSG_CHECKING([whether std::atomic can be used without link library])
+
+  AC_LINK_IFELSE([AC_LANG_SOURCE([_CHECK_ATOMIC_testbody])],[
+      AC_MSG_RESULT([yes])
+    ],[
+      AC_MSG_RESULT([no])
+      LIBS="$LIBS -latomic"
+      AC_MSG_CHECKING([whether std::atomic needs -latomic])
+      AC_LINK_IFELSE([AC_LANG_SOURCE([_CHECK_ATOMIC_testbody])],[
+          AC_MSG_RESULT([yes])
+        ],[
+          AC_MSG_RESULT([no])
+          AC_MSG_FAILURE([cannot figure out how to use std::atomic])
+        ])
+    ])
+
+  AC_LANG_POP
+])
--- a/configure.ac
+++ b/configure.ac
@@ -1,17 +1,30 @@
 dnl require autoconf 2.60 (AS_ECHO/AS_ECHO_N)
 AC_PREREQ([2.60])
 define(_CLIENT_VERSION_MAJOR, 0)
-define(_CLIENT_VERSION_MINOR, 11)
-define(_CLIENT_VERSION_REVISION, 99)
+define(_CLIENT_VERSION_MINOR, 16)
+define(_CLIENT_VERSION_REVISION, 0)
 define(_CLIENT_VERSION_BUILD, 0)
-define(_CLIENT_VERSION_IS_RELEASE, false)
-define(_COPYRIGHT_YEAR, 2015)
-AC_INIT([Bitcoin Core],[_CLIENT_VERSION_MAJOR._CLIENT_VERSION_MINOR._CLIENT_VERSION_REVISION],[https://github.com/bitcoin/bitcoin/issues],[bitcoin])
-AC_CONFIG_SRCDIR([src/main.cpp])
+define(_CLIENT_VERSION_IS_RELEASE, true)
+define(_COPYRIGHT_YEAR, 2018)
+define(_COPYRIGHT_HOLDERS,[The %s developers])
+define(_COPYRIGHT_HOLDERS_SUBSTITUTION,[[Bitcoin Core]])
+AC_INIT([Bitcoin Core],[_CLIENT_VERSION_MAJOR._CLIENT_VERSION_MINOR._CLIENT_VERSION_REVISION],[https://github.com/bitcoin/bitcoin/issues],[bitcoin],[https://bitcoincore.org/])
+AC_CONFIG_SRCDIR([src/validation.cpp])
 AC_CONFIG_HEADERS([src/config/bitcoin-config.h])
 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_MACRO_DIR([build-aux/m4])

+BITCOIN_DAEMON_NAME=bitcoind
+BITCOIN_GUI_NAME=bitcoin-qt
+BITCOIN_CLI_NAME=bitcoin-cli
+BITCOIN_TX_NAME=bitcoin-tx
+
+dnl Unless the user specified ARFLAGS, force it to be cr
+AC_ARG_VAR(ARFLAGS, [Flags for the archiver, defaults to <cr> if not set])
+if test "x${ARFLAGS+set}" != "xset"; then
+  ARFLAGS="cr"
+fi
+
 AC_CANONICAL_HOST

 AH_TOP([#ifndef BITCOIN_CONFIG_H])
@@ -38,7 +51,6 @@ else
  CXXFLAGS_overridden=no
 fi
 AC_PROG_CXX
-m4_ifdef([AC_PROG_OBJCXX],[AC_PROG_OBJCXX])

 dnl By default, libtool for mingw refuses to link static libs into a dll for
 dnl fear of mixing pic/non-pic objects, and import/export complications. Since
@@ -48,6 +60,20 @@ case $host in
     lt_cv_deplibs_check_method="pass_all"
  ;;
 esac
+dnl Require C++11 compiler (no GNU extensions)
+AX_CXX_COMPILE_STDCXX([11], [noext], [mandatory], [nodefault])
+dnl Check if -latomic is required for <std::atomic>
+CHECK_ATOMIC
+
+dnl Unless the user specified OBJCXX, force it to be the same as CXX. This ensures
+dnl that we get the same -std flags for both.
+m4_ifdef([AC_PROG_OBJCXX],[
+if test "x${OBJCXX+set}" = "x"; then
+  OBJCXX="${CXX}"
+fi
+AC_PROG_OBJCXX
+])
+
 dnl Libtool init checks.
 LT_INIT([pic-only])

@@ -57,16 +83,18 @@ AC_PATH_TOOL(RANLIB, ranlib)
 AC_PATH_TOOL(STRIP, strip)
 AC_PATH_TOOL(GCOV, gcov)
 AC_PATH_PROG(LCOV, lcov)
-AC_PATH_PROG(JAVA, java)
-AC_PATH_PROG(PYTHON, python)
+dnl Python 3.x is supported from 3.4 on (see https://github.com/bitcoin/bitcoin/issues/7893)
+AC_PATH_PROGS([PYTHON], [python3.6 python3.5 python3.4 python3 python2.7 python2 python])
 AC_PATH_PROG(GENHTML, genhtml)
 AC_PATH_PROG([GIT], [git])
 AC_PATH_PROG(CCACHE,ccache)
 AC_PATH_PROG(XGETTEXT,xgettext)
 AC_PATH_PROG(HEXDUMP,hexdump)
+AC_PATH_TOOL(READELF, readelf)
+AC_PATH_TOOL(CPPFILT, c++filt)
+AC_PATH_TOOL(OBJCOPY, objcopy)

-dnl pkg-config check.
-PKG_PROG_PKG_CONFIG
+AC_ARG_VAR(PYTHONPATH, Augments the default search path for python module files)

 # Enable wallet
 AC_ARG_ENABLE([wallet],
@@ -92,25 +120,20 @@ AC_ARG_ENABLE(tests,
    [use_tests=$enableval],
    [use_tests=yes])

+AC_ARG_ENABLE(gui-tests,
+    AS_HELP_STRING([--disable-gui-tests],[do not compile GUI tests (default is to compile if GUI and tests enabled)]),
+    [use_gui_tests=$enableval],
+    [use_gui_tests=$use_tests])
+
 AC_ARG_ENABLE(bench,
    AS_HELP_STRING([--disable-bench],[do not compile benchmarks (default is to compile)]),
    [use_bench=$enableval],
    [use_bench=yes])

-AC_ARG_WITH([comparison-tool],
-    AS_HELP_STRING([--with-comparison-tool],[path to java comparison tool (requires --enable-tests)]),
-    [use_comparison_tool=$withval],
-    [use_comparison_tool=no])
-
-AC_ARG_ENABLE([comparison-tool-reorg-tests],
-    AS_HELP_STRING([--enable-comparison-tool-reorg-tests],[enable expensive reorg tests in the comparison tool (default no)]),
-    [use_comparison_tool_reorg_tests=$enableval],
-    [use_comparison_tool_reorg_tests=no])
-
-AC_ARG_ENABLE([extended-rpc-tests],
-    AS_HELP_STRING([--enable-extended-rpc-tests],[enable expensive RPC tests when using lcov (default no)]),
-    [use_extended_rpc_tests=$enableval],
-    [use_extended_rpc_tests=no])
+AC_ARG_ENABLE([extended-functional-tests],
+    AS_HELP_STRING([--enable-extended-functional-tests],[enable expensive functional tests when using lcov (default no)]),
+    [use_extended_functional_tests=$enableval],
+    [use_extended_functional_tests=no])

 AC_ARG_WITH([qrencode],
  [AS_HELP_STRING([--with-qrencode],
@@ -139,15 +162,37 @@ AC_ARG_ENABLE([ccache],
 AC_ARG_ENABLE([lcov],
  [AS_HELP_STRING([--enable-lcov],
  [enable lcov testing (default is no)])],
-  [use_lcov=yes],
+  [use_lcov=$enableval],
  [use_lcov=no])

+AC_ARG_ENABLE([lcov-branch-coverage],
+  [AS_HELP_STRING([--enable-lcov-branch-coverage],
+  [enable lcov testing branch coverage (default is no)])],
+  [use_lcov_branch=yes],
+  [use_lcov_branch=no])
+
 AC_ARG_ENABLE([glibc-back-compat],
  [AS_HELP_STRING([--enable-glibc-back-compat],
  [enable backwards compatibility with glibc])],
  [use_glibc_compat=$enableval],
  [use_glibc_compat=no])

+AC_ARG_ENABLE([asm],
+  [AS_HELP_STRING([--enable-asm],
+  [Enable assembly routines (default is yes)])],
+  [use_asm=$enableval],
+  [use_asm=yes])
+
+if test "x$use_asm" = xyes; then
+  AC_DEFINE(USE_ASM, 1, [Define this symbol to build in assembly routines])
+fi
+
+AC_ARG_WITH([system-univalue],
+  [AS_HELP_STRING([--with-system-univalue],
+  [Build with system UniValue (default is no)])],
+  [system_univalue=$withval],
+  [system_univalue=no]
+)
 AC_ARG_ENABLE([zmq],
  [AS_HELP_STRING([--disable-zmq],
  [disable ZMQ notifications])],
@@ -156,6 +201,12 @@ AC_ARG_ENABLE([zmq],

 AC_ARG_WITH([protoc-bindir],[AS_HELP_STRING([--with-protoc-bindir=BIN_DIR],[specify protoc bin path])], [protoc_bin_path=$withval], [])

+AC_ARG_ENABLE(man,
+    [AS_HELP_STRING([--disable-man],
+                    [do not install man pages (default is to install)])],,
+    enable_man=yes)
+AM_CONDITIONAL(ENABLE_MAN, test "$enable_man" != no)
+
 # Enable debug
 AC_ARG_ENABLE([debug],
    [AS_HELP_STRING([--enable-debug],
@@ -163,6 +214,16 @@ AC_ARG_ENABLE([debug],
    [enable_debug=$enableval],
    [enable_debug=no])

+# Turn warnings into errors
+AC_ARG_ENABLE([werror],
+    [AS_HELP_STRING([--enable-werror],
+                    [Treat certain compiler warnings as errors (default is no)])],
+    [enable_werror=$enableval],
+    [enable_werror=no])
+
+AC_LANG_PUSH([C++])
+AX_CHECK_COMPILE_FLAG([-Werror],[CXXFLAG_WERROR="-Werror"],[CXXFLAG_WERROR=""])
+
 if test "x$enable_debug" = xyes; then
    CPPFLAGS="$CPPFLAGS -DDEBUG -DDEBUG_LOCKORDER"
    if test "x$GCC" = xyes; then
@@ -174,12 +235,60 @@ if test "x$enable_debug" = xyes; then
    fi
 fi

-## TODO: Remove these hard-coded paths and flags. They are here for the sake of
-##       compatibility with the legacy buildsystem.
-##
-if test "x$CXXFLAGS_overridden" = "xno"; then
-  CXXFLAGS="$CXXFLAGS -Wall -Wextra -Wformat -Wformat-security -Wno-unused-parameter -Wno-self-assign"
+ERROR_CXXFLAGS=
+if test "x$enable_werror" = "xyes"; then
+  if test "x$CXXFLAG_WERROR" = "x"; then
+    AC_MSG_ERROR("enable-werror set but -Werror is not usable")
+  fi
+  AX_CHECK_COMPILE_FLAG([-Werror=vla],[ERROR_CXXFLAGS="$ERROR_CXXFLAGS -Werror=vla"],,[[$CXXFLAG_WERROR]])
+  AX_CHECK_COMPILE_FLAG([-Werror=thread-safety-analysis],[ERROR_CXXFLAGS="$ERROR_CXXFLAGS -Werror=thread-safety-analysis"],,[[$CXXFLAG_WERROR]])
 fi
+
+if test "x$CXXFLAGS_overridden" = "xno"; then
+  AX_CHECK_COMPILE_FLAG([-Wall],[CXXFLAGS="$CXXFLAGS -Wall"],,[[$CXXFLAG_WERROR]])
+  AX_CHECK_COMPILE_FLAG([-Wextra],[CXXFLAGS="$CXXFLAGS -Wextra"],,[[$CXXFLAG_WERROR]])
+  AX_CHECK_COMPILE_FLAG([-Wformat],[CXXFLAGS="$CXXFLAGS -Wformat"],,[[$CXXFLAG_WERROR]])
+  AX_CHECK_COMPILE_FLAG([-Wvla],[CXXFLAGS="$CXXFLAGS -Wvla"],,[[$CXXFLAG_WERROR]])
+  AX_CHECK_COMPILE_FLAG([-Wformat-security],[CXXFLAGS="$CXXFLAGS -Wformat-security"],,[[$CXXFLAG_WERROR]])
+  AX_CHECK_COMPILE_FLAG([-Wthread-safety-analysis],[CXXFLAGS="$CXXFLAGS -Wthread-safety-analysis"],,[[$CXXFLAG_WERROR]])
+
+  ## Some compilers (gcc) ignore unknown -Wno-* options, but warn about all
+  ## unknown options if any other warning is produced. Test the -Wfoo case, and
+  ## set the -Wno-foo case if it works.
+  AX_CHECK_COMPILE_FLAG([-Wunused-parameter],[CXXFLAGS="$CXXFLAGS -Wno-unused-parameter"],,[[$CXXFLAG_WERROR]])
+  AX_CHECK_COMPILE_FLAG([-Wself-assign],[CXXFLAGS="$CXXFLAGS -Wno-self-assign"],,[[$CXXFLAG_WERROR]])
+  AX_CHECK_COMPILE_FLAG([-Wunused-local-typedef],[CXXFLAGS="$CXXFLAGS -Wno-unused-local-typedef"],,[[$CXXFLAG_WERROR]])
+  AX_CHECK_COMPILE_FLAG([-Wdeprecated-register],[CXXFLAGS="$CXXFLAGS -Wno-deprecated-register"],,[[$CXXFLAG_WERROR]])
+  AX_CHECK_COMPILE_FLAG([-Wimplicit-fallthrough],[CXXFLAGS="$CXXFLAGS -Wno-implicit-fallthrough"],,[[$CXXFLAG_WERROR]])
+fi
+
+# Check for optional instruction set support. Enabling these does _not_ imply that all code will
+# be compiled with them, rather that specific objects/libs may use them after checking for runtime
+# compatibility.
+AX_CHECK_COMPILE_FLAG([-msse4.2],[[SSE42_CXXFLAGS="-msse4.2"]],,[[$CXXFLAG_WERROR]])
+
+TEMP_CXXFLAGS="$CXXFLAGS"
+CXXFLAGS="$CXXFLAGS $SSE42_CXXFLAGS"
+AC_MSG_CHECKING(for assembler crc32 support)
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+    #include <stdint.h>
+    #if defined(_MSC_VER)
+    #include <intrin.h>
+    #elif defined(__GNUC__) && defined(__SSE4_2__)
+    #include <nmmintrin.h>
+    #endif
+  ]],[[
+    uint64_t l = 0;
+    l = _mm_crc32_u8(l, 0);
+    l = _mm_crc32_u32(l, 0);
+    l = _mm_crc32_u64(l, 0);
+    return l;
+  ]])],
+ [ AC_MSG_RESULT(yes); enable_hwcrc32=yes],
+ [ AC_MSG_RESULT(no)]
+)
+CXXFLAGS="$TEMP_CXXFLAGS"
+
 CPPFLAGS="$CPPFLAGS -DHAVE_BUILD_INFO -D__STDC_FORMAT_MACROS"

 AC_ARG_WITH([utils],
@@ -200,8 +309,6 @@ AC_ARG_WITH([daemon],
  [build_bitcoind=$withval],
  [build_bitcoind=yes])

-AC_LANG_PUSH([C++])
-
 use_pkgconfig=yes
 case $host in
  *mingw*)
@@ -245,7 +352,7 @@ case $host in
     fi

     CPPFLAGS="$CPPFLAGS -D_MT -DWIN32 -D_WINDOWS -DBOOST_THREAD_USE_LIB"
-     LEVELDB_TARGET_FLAGS="TARGET_OS=OS_WINDOWS_CROSSCOMPILE"
+     LEVELDB_TARGET_FLAGS="-DOS_WINDOWS"
     if test "x$CXXFLAGS_overridden" = "xno"; then
       CXXFLAGS="$CXXFLAGS -w"
     fi
@@ -267,7 +374,7 @@ case $host in
     ;;
  *darwin*)
     TARGET_OS=darwin
-     LEVELDB_TARGET_FLAGS="TARGET_OS=Darwin"
+     LEVELDB_TARGET_FLAGS="-DOS_MACOSX"
     if  test x$cross_compiling != xyes; then
       BUILD_OS=darwin
       AC_CHECK_PROG([PORT],port, port)
@@ -281,6 +388,7 @@ case $host in
         fi
       fi

+       AC_PATH_PROGS([RSVG_CONVERT], [rsvg-convert rsvg],rsvg-convert)
       AC_CHECK_PROG([BREW],brew, brew)
       if test x$BREW = xbrew; then
         dnl These Homebrew packages may be keg-only, meaning that they won't be found
@@ -314,6 +422,9 @@ case $host in
           AC_PATH_TOOL([INSTALLNAMETOOL], [install_name_tool], install_name_tool)
           AC_PATH_TOOL([OTOOL], [otool], otool)
           AC_PATH_PROGS([GENISOIMAGE], [genisoimage mkisofs],genisoimage)
+           AC_PATH_PROGS([RSVG_CONVERT], [rsvg-convert rsvg],rsvg-convert)
+           AC_PATH_PROGS([IMAGEMAGICK_CONVERT], [convert],convert)
+           AC_PATH_PROGS([TIFFCP], [tiffcp],tiffcp)

           dnl libtool will try to strip the static lib, which is a problem for
           dnl cross-builds because strip attempts to call a hard-coded ld,
@@ -330,26 +441,36 @@ case $host in
     ;;
   *linux*)
     TARGET_OS=linux
+     LEVELDB_TARGET_FLAGS="-DOS_LINUX"
+     ;;
+   *freebsd*)
+     LEVELDB_TARGET_FLAGS="-DOS_FREEBSD"
+     ;;
+   *openbsd*)
+     LEVELDB_TARGET_FLAGS="-DOS_OPENBSD"
+     ;;
+   *netbsd*)
+     LEVELDB_TARGET_FLAGS="-DOS_NETBSD"
     ;;
   *)
+     OTHER_OS=`echo ${host_os} | awk '{print toupper($0)}'`
+     AC_MSG_WARN([Guessing LevelDB OS as OS_${OTHER_OS}, please check whether this is correct, if not add an entry to configure.ac.])
+     LEVELDB_TARGET_FLAGS="-DOS_${OTHER_OS}"
     ;;
 esac

-if test x$use_comparison_tool != xno; then
-  AC_SUBST(JAVA_COMPARISON_TOOL, $use_comparison_tool)
-fi
-
-if test x$use_comparison_tool_reorg_tests != xno; then
-  if test x$use_comparison_tool = x; then
-    AC_MSG_ERROR("comparison tool reorg tests but comparison tool was not specified")
+if test x$use_pkgconfig = xyes; then
+  m4_ifndef([PKG_PROG_PKG_CONFIG], [AC_MSG_ERROR(PKG_PROG_PKG_CONFIG macro not found. Please install pkg-config and re-run autogen.sh.)])
+  m4_ifdef([PKG_PROG_PKG_CONFIG], [
+  PKG_PROG_PKG_CONFIG
+  if test x"$PKG_CONFIG" = "x"; then
+    AC_MSG_ERROR(pkg-config not found.)
  fi
-  AC_SUBST(COMPARISON_TOOL_REORG_TESTS, 1)
-else
-  AC_SUBST(COMPARISON_TOOL_REORG_TESTS, 0)
+  ])
 fi

-if test x$use_extended_rpc_tests != xno; then
-  AC_SUBST(EXTENDED_RPC_TESTS, -extended)
+if test x$use_extended_functional_tests != xno; then
+  AC_SUBST(EXTENDED_FUNCTIONAL_TESTS, --extended)
 fi

 if test x$use_lcov = xyes; then
@@ -359,21 +480,23 @@ if test x$use_lcov = xyes; then
  if test x$GCOV = x; then
    AC_MSG_ERROR("lcov testing requested but gcov not found")
  fi
-  if test x$JAVA = x; then
-    AC_MSG_ERROR("lcov testing requested but java not found")
-  fi
  if test x$PYTHON = x; then
    AC_MSG_ERROR("lcov testing requested but python not found")
  fi
  if test x$GENHTML = x; then
    AC_MSG_ERROR("lcov testing requested but genhtml not found")
  fi
-  if test x$use_comparison_tool = x; then
-    AC_MSG_ERROR("lcov testing requested but comparison tool was not specified")
-  fi
  LCOV="$LCOV --gcov-tool=$GCOV"
+  AX_CHECK_LINK_FLAG([[--coverage]], [LDFLAGS="$LDFLAGS --coverage"],
+    [AC_MSG_ERROR("lcov testing requested but --coverage linker flag does not work")])
  AX_CHECK_COMPILE_FLAG([--coverage],[CXXFLAGS="$CXXFLAGS --coverage"],
    [AC_MSG_ERROR("lcov testing requested but --coverage flag does not work")])
+  AC_DEFINE(USE_COVERAGE, 1, [Define this symbol if coverage is enabled])
+  CXXFLAGS="$CXXFLAGS -Og"
+fi
+
+if test x$use_lcov_branch != xno; then
+  AC_SUBST(LCOV_OPTS, "$LCOV_OPTS --rc lcov_branch_coverage=1")
 fi

 dnl Check for endianness
@@ -409,6 +532,10 @@ AX_GCC_FUNC_ATTRIBUTE([dllimport])

 if test x$use_glibc_compat != xno; then

+  #glibc absorbed clock_gettime in 2.17. librt (its previous location) is safe to link
+  #in anyway for back-compat.
+  AC_CHECK_LIB([rt],[clock_gettime],, AC_MSG_ERROR(lib missing))
+
  #__fdelt_chk's params and return type have changed from long unsigned int to long int.
  # See which one is present here.
  AC_MSG_CHECKING(__fdelt_chk type)
@@ -422,7 +549,8 @@ if test x$use_glibc_compat != xno; then
    [ fdelt_type="long int"])
  AC_MSG_RESULT($fdelt_type)
  AC_DEFINE_UNQUOTED(FDELT_TYPE, $fdelt_type,[parameter and return value type for __fdelt_chk])
-
+else
+  AC_SEARCH_LIBS([clock_gettime],[rt])
 fi

 if test x$TARGET_OS != xwindows; then
@@ -443,6 +571,7 @@ if test x$use_hardening != xno; then

  AX_CHECK_LINK_FLAG([[-Wl,--dynamicbase]], [HARDENED_LDFLAGS="$HARDENED_LDFLAGS -Wl,--dynamicbase"])
  AX_CHECK_LINK_FLAG([[-Wl,--nxcompat]], [HARDENED_LDFLAGS="$HARDENED_LDFLAGS -Wl,--nxcompat"])
+  AX_CHECK_LINK_FLAG([[-Wl,--high-entropy-va]], [HARDENED_LDFLAGS="$HARDENED_LDFLAGS -Wl,--high-entropy-va"])
  AX_CHECK_LINK_FLAG([[-Wl,-z,relro]], [HARDENED_LDFLAGS="$HARDENED_LDFLAGS -Wl,-z,relro"])
  AX_CHECK_LINK_FLAG([[-Wl,-z,now]], [HARDENED_LDFLAGS="$HARDENED_LDFLAGS -Wl,-z,now"])

@@ -464,11 +593,12 @@ if test x$TARGET_OS = xdarwin; then
 fi

 AC_CHECK_HEADERS([endian.h sys/endian.h byteswap.h stdio.h stdlib.h unistd.h strings.h sys/types.h sys/stat.h sys/select.h sys/prctl.h])
-AC_SEARCH_LIBS([getaddrinfo_a], [anl], [AC_DEFINE(HAVE_GETADDRINFO_A, 1, [Define this symbol if you have getaddrinfo_a])])
-AC_SEARCH_LIBS([inet_pton], [nsl resolv], [AC_DEFINE(HAVE_INET_PTON, 1, [Define this symbol if you have inet_pton])])

 AC_CHECK_DECLS([strnlen])

+# Check for daemon(3), unrelated to --with-daemon (although used by it)
+AC_CHECK_DECLS([daemon])
+
 AC_CHECK_DECLS([le16toh, le32toh, le64toh, htole16, htole32, htole64, be16toh, be32toh, be64toh, htobe16, htobe32, htobe64],,,
 		[#if HAVE_ENDIAN_H
                 #include <endian.h>
@@ -481,6 +611,8 @@ AC_CHECK_DECLS([bswap_16, bswap_32, bswap_64],,,
                 #include <byteswap.h>
                 #endif])

+AC_CHECK_DECLS([__builtin_clz, __builtin_clzl, __builtin_clzll])
+
 dnl Check for MSG_NOSIGNAL
 AC_MSG_CHECKING(for MSG_NOSIGNAL)
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/socket.h>]],
@@ -489,7 +621,29 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/socket.h>]],
 [ AC_MSG_RESULT(no)]
 )

-AC_SEARCH_LIBS([clock_gettime],[rt])
+dnl Check for MSG_DONTWAIT
+AC_MSG_CHECKING(for MSG_DONTWAIT)
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/socket.h>]],
+ [[ int f = MSG_DONTWAIT; ]])],
+ [ AC_MSG_RESULT(yes); AC_DEFINE(HAVE_MSG_DONTWAIT, 1,[Define this symbol if you have MSG_DONTWAIT]) ],
+ [ AC_MSG_RESULT(no)]
+)
+
+dnl Check for malloc_info (for memory statistics information in getmemoryinfo)
+AC_MSG_CHECKING(for getmemoryinfo)
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <malloc.h>]],
+ [[ int f = malloc_info(0, NULL); ]])],
+ [ AC_MSG_RESULT(yes); AC_DEFINE(HAVE_MALLOC_INFO, 1,[Define this symbol if you have malloc_info]) ],
+ [ AC_MSG_RESULT(no)]
+)
+
+dnl Check for mallopt(M_ARENA_MAX) (to set glibc arenas)
+AC_MSG_CHECKING(for mallopt M_ARENA_MAX)
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <malloc.h>]],
+ [[ mallopt(M_ARENA_MAX, 1); ]])],
+ [ AC_MSG_RESULT(yes); AC_DEFINE(HAVE_MALLOPT_ARENA_MAX, 1,[Define this symbol if you have mallopt with M_ARENA_MAX]) ],
+ [ AC_MSG_RESULT(no)]
+)

 AC_MSG_CHECKING([for visibility attribute])
 AC_LINK_IFELSE([AC_LANG_SOURCE([
@@ -508,6 +662,63 @@ AC_LINK_IFELSE([AC_LANG_SOURCE([
  ]
 )

+TEMP_LDFLAGS="$LDFLAGS"
+LDFLAGS="$TEMP_LDFLAGS $PTHREAD_CFLAGS"
+AC_MSG_CHECKING([for thread_local support])
+AC_LINK_IFELSE([AC_LANG_SOURCE([
+  #include <thread>
+  static thread_local int foo = 0;
+  static void run_thread() { foo++;}
+  int main(){
+  for(int i = 0; i < 10; i++) { std::thread(run_thread).detach();}
+  return foo;
+  }
+  ])],
+  [
+    AC_DEFINE(HAVE_THREAD_LOCAL,1,[Define if thread_local is supported.])
+    AC_MSG_RESULT(yes)
+  ],
+  [
+    AC_MSG_RESULT(no)
+  ]
+)
+LDFLAGS="$TEMP_LDFLAGS"
+
+# Check for different ways of gathering OS randomness
+AC_MSG_CHECKING(for Linux getrandom syscall)
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>
+  #include <sys/syscall.h>
+  #include <linux/random.h>]],
+ [[ syscall(SYS_getrandom, nullptr, 32, 0); ]])],
+ [ AC_MSG_RESULT(yes); AC_DEFINE(HAVE_SYS_GETRANDOM, 1,[Define this symbol if the Linux getrandom system call is available]) ],
+ [ AC_MSG_RESULT(no)]
+)
+
+AC_MSG_CHECKING(for getentropy)
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>]],
+ [[ getentropy(nullptr, 32) ]])],
+ [ AC_MSG_RESULT(yes); AC_DEFINE(HAVE_GETENTROPY, 1,[Define this symbol if the BSD getentropy system call is available]) ],
+ [ AC_MSG_RESULT(no)]
+)
+
+AC_MSG_CHECKING(for getentropy via random.h)
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>
+ #include <sys/random.h>]],
+ [[ getentropy(nullptr, 32) ]])],
+ [ AC_MSG_RESULT(yes); AC_DEFINE(HAVE_GETENTROPY_RAND, 1,[Define this symbol if the BSD getentropy system call is available with sys/random.h]) ],
+ [ AC_MSG_RESULT(no)]
+)
+
+AC_MSG_CHECKING(for sysctl KERN_ARND)
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/types.h>
+  #include <sys/sysctl.h>]],
+ [[ static const int name[2] = {CTL_KERN, KERN_ARND};
+    sysctl(name, 2, nullptr, nullptr, nullptr, 0); ]])],
+ [ AC_MSG_RESULT(yes); AC_DEFINE(HAVE_SYSCTL_ARND, 1,[Define this symbol if the BSD sysctl(KERN_ARND) is available]) ],
+ [ AC_MSG_RESULT(no)]
+)
+
+# Check for reduced exports
 if test x$use_reduce_exports = xyes; then
  AX_CHECK_COMPILE_FLAG([-fvisibility=hidden],[RE_CXXFLAGS="-fvisibility=hidden"],
  [AC_MSG_ERROR([Cannot set default symbol visibility. Use --disable-reduce-exports.])])
@@ -540,7 +751,7 @@ BITCOIN_QT_INIT
 dnl sets $bitcoin_enable_qt, $bitcoin_enable_qt_test, $bitcoin_enable_qt_dbus
 BITCOIN_QT_CONFIGURE([$use_pkgconfig], [qt5])

-if test x$build_bitcoin_utils$build_bitcoind$bitcoin_enable_qt$use_tests = xnononono; then
+if test x$build_bitcoin_utils$build_bitcoind$bitcoin_enable_qt$use_tests$use_bench = xnonononono; then
    use_boost=no
 else
    use_boost=yes
@@ -548,14 +759,24 @@ fi

 if test x$use_boost = xyes; then

+dnl Minimum required Boost version
+define(MINIMUM_REQUIRED_BOOST, 1.47.0)
+
 dnl Check for boost libs
-AX_BOOST_BASE
+AX_BOOST_BASE([MINIMUM_REQUIRED_BOOST])
+if test x$want_boost = xno; then
+    AC_MSG_ERROR([[only libbitcoinconsensus can be built without boost]])
+fi
 AX_BOOST_SYSTEM
 AX_BOOST_FILESYSTEM
 AX_BOOST_PROGRAM_OPTIONS
 AX_BOOST_THREAD
 AX_BOOST_CHRONO

+dnl Boost 1.56 through 1.62 allow using std::atomic instead of its own atomic
+dnl counter implementations. In 1.63 and later the std::atomic approach is default.
+m4_pattern_allow(DBOOST_AC_USE_STD_ATOMIC) dnl otherwise it's treated like a macro
+BOOST_CPPFLAGS="-DBOOST_SP_USE_STD_ATOMIC -DBOOST_AC_USE_STD_ATOMIC $BOOST_CPPFLAGS"

 if test x$use_reduce_exports = xyes; then
  AC_MSG_CHECKING([for working boost reduced exports])
@@ -619,6 +840,42 @@ if test x$use_boost = xyes; then

 BOOST_LIBS="$BOOST_LDFLAGS $BOOST_SYSTEM_LIB $BOOST_FILESYSTEM_LIB $BOOST_PROGRAM_OPTIONS_LIB $BOOST_THREAD_LIB $BOOST_CHRONO_LIB"

+
+dnl If boost (prior to 1.57) was built without c++11, it emulated scoped enums
+dnl using c++98 constructs. Unfortunately, this implementation detail leaked into
+dnl the abi. This was fixed in 1.57.
+
+dnl When building against that installed version using c++11, the headers pick up
+dnl on the native c++11 scoped enum support and enable it, however it will fail to
+dnl link. This can be worked around by disabling c++11 scoped enums if linking will
+dnl fail.
+dnl BOOST_NO_SCOPED_ENUMS was changed to BOOST_NO_CXX11_SCOPED_ENUMS in 1.51.
+
+TEMP_LIBS="$LIBS"
+LIBS="$BOOST_LIBS $LIBS"
+TEMP_CPPFLAGS="$CPPFLAGS"
+CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
+AC_MSG_CHECKING([for mismatched boost c++11 scoped enums])
+AC_LINK_IFELSE([AC_LANG_PROGRAM([[
+  #include <boost/config.hpp>
+  #include <boost/version.hpp>
+  #if !defined(BOOST_NO_SCOPED_ENUMS) && !defined(BOOST_NO_CXX11_SCOPED_ENUMS) && BOOST_VERSION < 105700
+  #define BOOST_NO_SCOPED_ENUMS
+  #define BOOST_NO_CXX11_SCOPED_ENUMS
+  #define CHECK
+  #endif
+  #include <boost/filesystem.hpp>
+  ]],[[
+  #if defined(CHECK)
+    boost::filesystem::copy_file("foo", "bar");
+  #else
+    choke;
+  #endif
+  ]])],
+  [AC_MSG_RESULT(mismatched); BOOST_CPPFLAGS="$BOOST_CPPFLAGS -DBOOST_NO_SCOPED_ENUMS -DBOOST_NO_CXX11_SCOPED_ENUMS"], [AC_MSG_RESULT(ok)])
+LIBS="$TEMP_LIBS"
+CPPFLAGS="$TEMP_CPPFLAGS"
+
 dnl Boost >= 1.50 uses sleep_for rather than the now-deprecated sleep, however
 dnl it was broken from 1.50 to 1.52 when backed by nanosleep. Use sleep_for if
 dnl a working version is available, else fall back to sleep. sleep was removed
@@ -673,12 +930,7 @@ fi
 fi

 if test x$use_pkgconfig = xyes; then
-
-  if test x"$PKG_CONFIG" = "x"; then
-    AC_MSG_ERROR(pkg-config not found.)
-  fi
-
-  : #NOP
+  : dnl
  m4_ifdef(
    [PKG_CHECK_MODULES],
    [
@@ -735,6 +987,15 @@ else
    AC_DEFINE_UNQUOTED([ENABLE_ZMQ],[0],[Define to 1 to enable ZMQ functions])
  fi

+  if test "x$use_zmq" = "xyes"; then
+    dnl Assume libzmq was built for static linking
+    case $host in
+      *mingw*)
+        ZMQ_CFLAGS="$ZMQ_CFLAGS -DZMQ_STATIC"
+      ;;
+    esac
+  fi
+
  BITCOIN_QT_CHECK(AC_CHECK_LIB([protobuf] ,[main],[PROTOBUF_LIBS=-lprotobuf], BITCOIN_QT_FAIL(libprotobuf not found)))
  if test x$use_qr != xno; then
    BITCOIN_QT_CHECK([AC_CHECK_LIB([qrencode], [main],[QR_LIBS=-lqrencode], [have_qrencode=no])])
@@ -742,13 +1003,60 @@ else
  fi
 fi

-CXXFLAGS_TEMP="$CXXFLAGS"
-LIBS_TEMP="$LIBS"
-CXXFLAGS="$CXXFLAGS $SSL_CFLAGS $CRYPTO_CFLAGS"
-LIBS="$LIBS $SSL_LIBS $CRYPTO_LIBS"
-AC_CHECK_HEADER([openssl/ec.h],, AC_MSG_ERROR(OpenSSL ec header missing),)
-CXXFLAGS="$CXXFLAGS_TEMP"
-LIBS="$LIBS_TEMP"
+save_CXXFLAGS="${CXXFLAGS}"
+CXXFLAGS="${CXXFLAGS} ${CRYPTO_CFLAGS} ${SSL_CFLAGS}"
+AC_CHECK_DECLS([EVP_MD_CTX_new],,,[AC_INCLUDES_DEFAULT
+#include <openssl/x509_vfy.h>
+])
+CXXFLAGS="${save_CXXFLAGS}"
+
+dnl univalue check
+
+need_bundled_univalue=yes
+
+if test x$build_bitcoin_utils$build_bitcoind$bitcoin_enable_qt$use_tests$use_bench = xnonononono; then
+  need_bundled_univalue=no
+else
+
+if test x$system_univalue != xno ; then
+  found_univalue=no
+  if test x$use_pkgconfig = xyes; then
+    : #NOP
+    m4_ifdef(
+      [PKG_CHECK_MODULES],
+      [
+        PKG_CHECK_MODULES([UNIVALUE],[libunivalue],[found_univalue=yes],[true])
+      ]
+    )
+  else
+    AC_CHECK_HEADER([univalue.h],[
+      AC_CHECK_LIB([univalue],  [main],[
+        UNIVALUE_LIBS=-lunivalue
+        found_univalue=yes
+      ],[true])
+    ],[true])
+  fi
+
+  if test x$found_univalue = xyes ; then
+    system_univalue=yes
+    need_bundled_univalue=no
+  elif test x$system_univalue = xyes ; then
+    AC_MSG_ERROR([univalue not found])
+  else
+    system_univalue=no
+  fi
+fi
+
+if test x$need_bundled_univalue = xyes ; then
+  UNIVALUE_CFLAGS='-I$(srcdir)/univalue/include'
+  UNIVALUE_LIBS='univalue/libunivalue.la'
+fi
+
+fi
+
+AM_CONDITIONAL([EMBEDDED_UNIVALUE],[test x$need_bundled_univalue = xyes])
+AC_SUBST(UNIVALUE_CFLAGS)
+AC_SUBST(UNIVALUE_LIBS)

 BITCOIN_QT_PATH_PROGS([PROTOC], [protoc],$protoc_bin_path)

@@ -827,8 +1135,8 @@ else
 fi

 dnl these are only used when qt is enabled
+BUILD_TEST_QT=""
 if test x$bitcoin_enable_qt != xno; then
-  BUILD_QT=qt
  dnl enable dbus support
  AC_MSG_CHECKING([whether to build GUI with support for D-Bus])
  if test x$bitcoin_enable_qt_dbus != xno; then
@@ -858,9 +1166,9 @@ if test x$bitcoin_enable_qt != xno; then
  fi

  AC_MSG_CHECKING([whether to build test_bitcoin-qt])
-  if test x$use_tests$bitcoin_enable_qt_test = xyesyes; then
+  if test x$use_gui_tests$bitcoin_enable_qt_test = xyesyes; then
    AC_MSG_RESULT([yes])
-    BUILD_TEST_QT="test"
+    BUILD_TEST_QT="yes"
  else
    AC_MSG_RESULT([no])
  fi
@@ -871,9 +1179,10 @@ AM_CONDITIONAL([ENABLE_ZMQ], [test "x$use_zmq" = "xyes"])
 AC_MSG_CHECKING([whether to build test_bitcoin])
 if test x$use_tests = xyes; then
  AC_MSG_RESULT([yes])
-  BUILD_TEST="test"
+  BUILD_TEST="yes"
 else
  AC_MSG_RESULT([no])
+  BUILD_TEST=""
 fi

 AC_MSG_CHECKING([whether to reduce exports])
@@ -883,57 +1192,78 @@ else
  AC_MSG_RESULT([no])
 fi

-if test x$build_bitcoin_utils$build_bitcoin_libs$build_bitcoind$bitcoin_enable_qt$use_tests = xnonononono; then
-  AC_MSG_ERROR([No targets! Please specify at least one of: --with-utils --with-libs --with-daemon --with-gui or --enable-tests])
+if test x$build_bitcoin_utils$build_bitcoin_libs$build_bitcoind$bitcoin_enable_qt$use_bench$use_tests = xnononononono; then
+  AC_MSG_ERROR([No targets! Please specify at least one of: --with-utils --with-libs --with-daemon --with-gui --enable-bench or --enable-tests])
 fi

 AM_CONDITIONAL([TARGET_DARWIN], [test x$TARGET_OS = xdarwin])
 AM_CONDITIONAL([BUILD_DARWIN], [test x$BUILD_OS = xdarwin])
 AM_CONDITIONAL([TARGET_WINDOWS], [test x$TARGET_OS = xwindows])
 AM_CONDITIONAL([ENABLE_WALLET],[test x$enable_wallet = xyes])
-AM_CONDITIONAL([ENABLE_TESTS],[test x$use_tests = xyes])
+AM_CONDITIONAL([ENABLE_TESTS],[test x$BUILD_TEST = xyes])
 AM_CONDITIONAL([ENABLE_QT],[test x$bitcoin_enable_qt = xyes])
-AM_CONDITIONAL([ENABLE_QT_TESTS],[test x$use_tests$bitcoin_enable_qt_test = xyesyes])
+AM_CONDITIONAL([ENABLE_QT_TESTS],[test x$BUILD_TEST_QT = xyes])
 AM_CONDITIONAL([ENABLE_BENCH],[test x$use_bench = xyes])
 AM_CONDITIONAL([USE_QRCODE], [test x$use_qr = xyes])
 AM_CONDITIONAL([USE_LCOV],[test x$use_lcov = xyes])
-AM_CONDITIONAL([USE_COMPARISON_TOOL],[test x$use_comparison_tool != xno])
-AM_CONDITIONAL([USE_COMPARISON_TOOL_REORG_TESTS],[test x$use_comparison_tool_reorg_test != xno])
 AM_CONDITIONAL([GLIBC_BACK_COMPAT],[test x$use_glibc_compat = xyes])
+AM_CONDITIONAL([HARDEN],[test x$use_hardening = xyes])
+AM_CONDITIONAL([ENABLE_HWCRC32],[test x$enable_hwcrc32 = xyes])
+AM_CONDITIONAL([USE_ASM],[test x$use_asm = xyes])

 AC_DEFINE(CLIENT_VERSION_MAJOR, _CLIENT_VERSION_MAJOR, [Major version])
 AC_DEFINE(CLIENT_VERSION_MINOR, _CLIENT_VERSION_MINOR, [Minor version])
 AC_DEFINE(CLIENT_VERSION_REVISION, _CLIENT_VERSION_REVISION, [Build revision])
 AC_DEFINE(CLIENT_VERSION_BUILD, _CLIENT_VERSION_BUILD, [Version Build])
 AC_DEFINE(CLIENT_VERSION_IS_RELEASE, _CLIENT_VERSION_IS_RELEASE, [Version is release])
-AC_DEFINE(COPYRIGHT_YEAR, _COPYRIGHT_YEAR, [Version is release])
+AC_DEFINE(COPYRIGHT_YEAR, _COPYRIGHT_YEAR, [Copyright year])
+AC_DEFINE(COPYRIGHT_HOLDERS, "_COPYRIGHT_HOLDERS", [Copyright holder(s) before %s replacement])
+AC_DEFINE(COPYRIGHT_HOLDERS_SUBSTITUTION, "_COPYRIGHT_HOLDERS_SUBSTITUTION", [Replacement for %s in copyright holders string])
+define(_COPYRIGHT_HOLDERS_FINAL, [patsubst(_COPYRIGHT_HOLDERS, [%s], [_COPYRIGHT_HOLDERS_SUBSTITUTION])])
+AC_DEFINE(COPYRIGHT_HOLDERS_FINAL, "_COPYRIGHT_HOLDERS_FINAL", [Copyright holder(s)])
 AC_SUBST(CLIENT_VERSION_MAJOR, _CLIENT_VERSION_MAJOR)
 AC_SUBST(CLIENT_VERSION_MINOR, _CLIENT_VERSION_MINOR)
 AC_SUBST(CLIENT_VERSION_REVISION, _CLIENT_VERSION_REVISION)
 AC_SUBST(CLIENT_VERSION_BUILD, _CLIENT_VERSION_BUILD)
 AC_SUBST(CLIENT_VERSION_IS_RELEASE, _CLIENT_VERSION_IS_RELEASE)
 AC_SUBST(COPYRIGHT_YEAR, _COPYRIGHT_YEAR)
+AC_SUBST(COPYRIGHT_HOLDERS, "_COPYRIGHT_HOLDERS")
+AC_SUBST(COPYRIGHT_HOLDERS_SUBSTITUTION, "_COPYRIGHT_HOLDERS_SUBSTITUTION")
+AC_SUBST(COPYRIGHT_HOLDERS_FINAL, "_COPYRIGHT_HOLDERS_FINAL")
+AC_SUBST(BITCOIN_DAEMON_NAME)
+AC_SUBST(BITCOIN_GUI_NAME)
+AC_SUBST(BITCOIN_CLI_NAME)
+AC_SUBST(BITCOIN_TX_NAME)

 AC_SUBST(RELDFLAGS)
+AC_SUBST(ERROR_CXXFLAGS)
 AC_SUBST(HARDENED_CXXFLAGS)
 AC_SUBST(HARDENED_CPPFLAGS)
 AC_SUBST(HARDENED_LDFLAGS)
 AC_SUBST(PIC_FLAGS)
 AC_SUBST(PIE_FLAGS)
+AC_SUBST(SSE42_CXXFLAGS)
 AC_SUBST(LIBTOOL_APP_LDFLAGS)
 AC_SUBST(USE_UPNP)
 AC_SUBST(USE_QRCODE)
 AC_SUBST(BOOST_LIBS)
 AC_SUBST(TESTDEFS)
 AC_SUBST(LEVELDB_TARGET_FLAGS)
-AC_SUBST(BUILD_TEST)
-AC_SUBST(BUILD_QT)
-AC_SUBST(BUILD_TEST_QT)
 AC_SUBST(MINIUPNPC_CPPFLAGS)
 AC_SUBST(MINIUPNPC_LIBS)
-AC_CONFIG_FILES([Makefile src/Makefile share/setup.nsi share/qt/Info.plist src/test/buildenv.py])
-AC_CONFIG_FILES([qa/pull-tester/run-bitcoind-for-test.sh],[chmod +x qa/pull-tester/run-bitcoind-for-test.sh])
-AC_CONFIG_FILES([qa/pull-tester/tests_config.py],[chmod +x qa/pull-tester/tests_config.py])
+AC_SUBST(CRYPTO_LIBS)
+AC_SUBST(SSL_LIBS)
+AC_SUBST(EVENT_LIBS)
+AC_SUBST(EVENT_PTHREADS_LIBS)
+AC_SUBST(ZMQ_LIBS)
+AC_SUBST(PROTOBUF_LIBS)
+AC_SUBST(QR_LIBS)
+AC_CONFIG_FILES([Makefile src/Makefile doc/man/Makefile share/setup.nsi share/qt/Info.plist test/config.ini])
+AC_CONFIG_FILES([contrib/devtools/split-debug.sh],[chmod +x contrib/devtools/split-debug.sh])
+AC_CONFIG_FILES([doc/Doxyfile])
+AC_CONFIG_LINKS([contrib/filter-lcov.py:contrib/filter-lcov.py])
+AC_CONFIG_LINKS([test/functional/test_runner.py:test/functional/test_runner.py])
+AC_CONFIG_LINKS([test/util/bitcoin-util-test.py:test/util/bitcoin-util-test.py])

 dnl boost's m4 checks do something really nasty: they export these vars. As a
 dnl result, they leak into secp256k1's configure and crazy things happen.
@@ -958,8 +1288,12 @@ PKGCONFIG_LIBDIR_TEMP="$PKG_CONFIG_LIBDIR"
 unset PKG_CONFIG_LIBDIR
 PKG_CONFIG_LIBDIR="$PKGCONFIG_LIBDIR_TEMP"

-ac_configure_args="${ac_configure_args} --disable-shared --with-pic --with-bignum=no --enable-module-recovery"
-AC_CONFIG_SUBDIRS([src/secp256k1 src/univalue])
+if test x$need_bundled_univalue = xyes; then
+  AC_CONFIG_SUBDIRS([src/univalue])
+fi
+
+ac_configure_args="${ac_configure_args} --disable-shared --with-pic --with-bignum=no --enable-module-recovery --disable-jni"
+AC_CONFIG_SUBDIRS([src/secp256k1])

 AC_OUTPUT

@@ -977,7 +1311,35 @@ esac
 dnl Replace the BUILDDIR path with the correct Windows path if compiling on Native Windows
 case ${OS} in
   *Windows*)
-     sed  's/BUILDDIR="\/\([[a-z]]\)/BUILDDIR="\1:/'  qa/pull-tester/tests_config.py > qa/pull-tester/tests_config-2.py
-     mv qa/pull-tester/tests_config-2.py qa/pull-tester/tests_config.py
+     sed  's/BUILDDIR="\/\([[a-z]]\)/BUILDDIR="\1:/'  test/config.ini > test/config-2.ini
+     mv test/config-2.ini test/config.ini
   ;;
 esac
+
+echo
+echo "Options used to compile and link:"
+echo "  with wallet   = $enable_wallet"
+echo "  with gui / qt = $bitcoin_enable_qt"
+if test x$bitcoin_enable_qt != xno; then
+    echo "    qt version  = $bitcoin_qt_got_major_vers"
+    echo "    with qr     = $use_qr"
+fi
+echo "  with zmq      = $use_zmq"
+echo "  with test     = $use_tests"
+echo "  with bench    = $use_bench"
+echo "  with upnp     = $use_upnp"
+echo "  use asm       = $use_asm"
+echo "  debug enabled = $enable_debug"
+echo "  werror        = $enable_werror"
+echo
+echo "  target os     = $TARGET_OS"
+echo "  build os      = $BUILD_OS"
+echo
+echo "  CC            = $CC"
+echo "  CFLAGS        = $CFLAGS"
+echo "  CPPFLAGS      = $CPPFLAGS"
+echo "  CXX           = $CXX"
+echo "  CXXFLAGS      = $CXXFLAGS"
+echo "  LDFLAGS       = $LDFLAGS"
+echo "  ARFLAGS       = $ARFLAGS"
+echo
--- a/contrib/README.md
+++ b/contrib/README.md
@@ -1,20 +1,12 @@
-Wallet Tools
---------------------
-
-### [SpendFrom](/contrib/spendfrom) ###
-
-Use the raw transactions API to send coins received on a particular
-address (or addresses).
-
 Repository Tools
 ---------------------

 ### [Developer tools](/contrib/devtools) ###
 Specific tools for developers working on this repository.
-Contains the script `github-merge.sh` for merging github pull requests securely and signing them using GPG.
+Contains the script `github-merge.py` for merging GitHub pull requests securely and signing them using GPG.

 ### [Verify-Commits](/contrib/verify-commits) ###
-Tool to verify that every merge commit was signed by a developer using the above `github-merge.sh` script.
+Tool to verify that every merge commit was signed by a developer using the above `github-merge.py` script.

 ### [Linearize](/contrib/linearize) ###
 Construct a linear, no-fork, best version of the blockchain.
@@ -34,23 +26,25 @@ Contains files used to package bitcoind/bitcoin-qt
 for Debian-based Linux systems. If you compile bitcoind/bitcoin-qt yourself, there are some useful files here.

 ### [Gitian-descriptors](/contrib/gitian-descriptors) ###
-Gavin's notes on getting gitian builds up and running using KVM.
+Files used during the gitian build process. For more information about gitian, see the [the Bitcoin Core documentation repository](https://github.com/bitcoin-core/docs).

-### [Gitian-downloader](/contrib/gitian-downloader)
-Various PGP files of core developers. 
+### [Gitian-keys](/contrib/gitian-keys)
+PGP keys used for signing Bitcoin Core [Gitian release](/doc/release-process.md) results.

 ### [MacDeploy](/contrib/macdeploy) ###
 Scripts and notes for Mac builds. 

+### [RPM](/contrib/rpm) ###
+RPM spec file for building bitcoin-core on RPM based distributions.
+
+### [Gitian-build](/contrib/gitian-build.sh) ###
+Script for running full Gitian builds.
+
 Test and Verify Tools 
 ---------------------

 ### [TestGen](/contrib/testgen) ###
 Utilities to generate test vectors for the data-driven Bitcoin tests.

-### [Test Patches](/contrib/test-patches) ###
-These patches are applied when the automated pull-tester
-tests each pull and when master is tested using jenkins.
-
-### [Verify SF Binaries](/contrib/verifysfbinaries) ###
-This script attempts to download and verify the signature file SHA256SUMS.asc from SourceForge.
+### [Verify Binaries](/contrib/verifybinaries) ###
+This script attempts to download and verify the signature file SHA256SUMS.asc from bitcoin.org.
--- a/contrib/bitcoin-cli.bash-completion
+++ b/contrib/bitcoin-cli.bash-completion
@@ -0,0 +1,154 @@
+# bash programmable completion for bitcoin-cli(1)
+# Copyright (c) 2012-2016 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+# call $bitcoin-cli for RPC
+_bitcoin_rpc() {
+    # determine already specified args necessary for RPC
+    local rpcargs=()
+    for i in ${COMP_LINE}; do
+        case "$i" in
+            -conf=*|-datadir=*|-regtest|-rpc*|-testnet)
+                rpcargs=( "${rpcargs[@]}" "$i" )
+                ;;
+        esac
+    done
+    $bitcoin_cli "${rpcargs[@]}" "$@"
+}
+
+# Add wallet accounts to COMPREPLY
+_bitcoin_accounts() {
+    local accounts
+    accounts=$(_bitcoin_rpc listaccounts | awk -F '"' '{ print $2 }')
+    COMPREPLY=( "${COMPREPLY[@]}" $( compgen -W "$accounts" -- "$cur" ) )
+}
+
+_bitcoin_cli() {
+    local cur prev words=() cword
+    local bitcoin_cli
+
+    # save and use original argument to invoke bitcoin-cli for -help, help and RPC
+    # as bitcoin-cli might not be in $PATH
+    bitcoin_cli="$1"
+
+    COMPREPLY=()
+    _get_comp_words_by_ref -n = cur prev words cword
+
+    if ((cword > 5)); then
+        case ${words[cword-5]} in
+            sendtoaddress)
+                COMPREPLY=( $( compgen -W "true false" -- "$cur" ) )
+                return 0
+                ;;
+        esac
+    fi
+
+    if ((cword > 4)); then
+        case ${words[cword-4]} in
+            importaddress|listtransactions|setban)
+                COMPREPLY=( $( compgen -W "true false" -- "$cur" ) )
+                return 0
+                ;;
+            signrawtransaction)
+                COMPREPLY=( $( compgen -W "ALL NONE SINGLE ALL|ANYONECANPAY NONE|ANYONECANPAY SINGLE|ANYONECANPAY" -- "$cur" ) )
+                return 0
+                ;;
+        esac
+    fi
+
+    if ((cword > 3)); then
+        case ${words[cword-3]} in
+            addmultisigaddress)
+                _bitcoin_accounts
+                return 0
+                ;;
+            getbalance|gettxout|importaddress|importpubkey|importprivkey|listreceivedbyaccount|listreceivedbyaddress|listsinceblock)
+                COMPREPLY=( $( compgen -W "true false" -- "$cur" ) )
+                return 0
+                ;;
+        esac
+    fi
+
+    if ((cword > 2)); then
+        case ${words[cword-2]} in
+            addnode)
+                COMPREPLY=( $( compgen -W "add remove onetry" -- "$cur" ) )
+                return 0
+                ;;
+            setban)
+                COMPREPLY=( $( compgen -W "add remove" -- "$cur" ) )
+                return 0
+                ;;
+            fundrawtransaction|getblock|getblockheader|getmempoolancestors|getmempooldescendants|getrawtransaction|gettransaction|listaccounts|listreceivedbyaccount|listreceivedbyaddress|sendrawtransaction)
+                COMPREPLY=( $( compgen -W "true false" -- "$cur" ) )
+                return 0
+                ;;
+            move|setaccount)
+                _bitcoin_accounts
+                return 0
+                ;;
+        esac
+    fi
+
+    case "$prev" in
+        backupwallet|dumpwallet|importwallet)
+            _filedir
+            return 0
+            ;;
+        getaddednodeinfo|getrawmempool|lockunspent|setgenerate)
+            COMPREPLY=( $( compgen -W "true false" -- "$cur" ) )
+            return 0
+            ;;
+        getaccountaddress|getaddressesbyaccount|getbalance|getnewaddress|getreceivedbyaccount|listtransactions|move|sendfrom|sendmany)
+            _bitcoin_accounts
+            return 0
+            ;;
+    esac
+
+    case "$cur" in
+        -conf=*)
+            cur="${cur#*=}"
+            _filedir
+            return 0
+            ;;
+        -datadir=*)
+            cur="${cur#*=}"
+            _filedir -d
+            return 0
+            ;;
+        -*=*)	# prevent nonsense completions
+            return 0
+            ;;
+        *)
+            local helpopts commands
+
+            # only parse -help if senseful
+            if [[ -z "$cur" || "$cur" =~ ^- ]]; then
+                helpopts=$($bitcoin_cli -help 2>&1 | awk '$1 ~ /^-/ { sub(/=.*/, "="); print $1 }' )
+            fi
+
+            # only parse help if senseful
+            if [[ -z "$cur" || "$cur" =~ ^[a-z] ]]; then
+                commands=$(_bitcoin_rpc help 2>/dev/null | awk '$1 ~ /^[a-z]/ { print $1; }')
+            fi
+
+            COMPREPLY=( $( compgen -W "$helpopts $commands" -- "$cur" ) )
+
+            # Prevent space if an argument is desired
+            if [[ $COMPREPLY == *= ]]; then
+                compopt -o nospace
+            fi
+            return 0
+            ;;
+    esac
+} &&
+complete -F _bitcoin_cli bitcoin-cli
+
+# Local variables:
+# mode: shell-script
+# sh-basic-offset: 4
+# sh-indent-comment: t
+# indent-tabs-mode: nil
+# End:
+# ex: ts=4 sw=4 et filetype=sh
--- a/contrib/bitcoin-tx.bash-completion
+++ b/contrib/bitcoin-tx.bash-completion
@@ -0,0 +1,57 @@
+# bash programmable completion for bitcoin-tx(1)
+# Copyright (c) 2016 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+_bitcoin_tx() {
+    local cur prev words=() cword
+    local bitcoin_tx
+
+    # save and use original argument to invoke bitcoin-tx for -help
+    # it might not be in $PATH
+    bitcoin_tx="$1"
+
+    COMPREPLY=()
+    _get_comp_words_by_ref -n =: cur prev words cword
+
+    case "$cur" in
+        load=*:*)
+            cur="${cur#load=*:}"
+            _filedir
+            return 0
+            ;;
+        *=*)	# prevent attempts to complete other arguments
+            return 0
+            ;;
+    esac
+
+    if [[ "$cword" == 1 || ( "$prev" != "-create" && "$prev" == -* ) ]]; then
+        # only options (or an uncompletable hex-string) allowed
+        # parse bitcoin-tx -help for options
+        local helpopts
+        helpopts=$($bitcoin_tx -help | sed -e '/^  -/ p' -e d )
+        COMPREPLY=( $( compgen -W "$helpopts" -- "$cur" ) )
+    else
+        # only commands are allowed
+        # parse -help for commands
+        local helpcmds
+        helpcmds=$($bitcoin_tx -help | sed -e '1,/Commands:/d' -e 's/=.*/=/' -e '/^  [a-z]/ p' -e d )
+        COMPREPLY=( $( compgen -W "$helpcmds" -- "$cur" ) )
+    fi
+
+    # Prevent space if an argument is desired
+    if [[ $COMPREPLY == *= ]]; then
+        compopt -o nospace
+    fi
+
+    return 0
+} &&
+complete -F _bitcoin_tx bitcoin-tx
+
+# Local variables:
+# mode: shell-script
+# sh-basic-offset: 4
+# sh-indent-comment: t
+# indent-tabs-mode: nil
+# End:
+# ex: ts=4 sw=4 et filetype=sh
--- a/contrib/bitcoind.bash-completion
+++ b/contrib/bitcoind.bash-completion
@@ -1,102 +1,21 @@
-# bash programmable completion for bitcoind(1) and bitcoin-cli(1)
-# Copyright (c) 2012,2014 Christian von Roques <roques@mti.ag>
+# bash programmable completion for bitcoind(1) and bitcoin-qt(1)
+# Copyright (c) 2012-2016 The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.

-have bitcoind && {
-
-# call $bitcoind for RPC
-_bitcoin_rpc() {
-    # determine already specified args necessary for RPC
-    local rpcargs=()
-    for i in ${COMP_LINE}; do
-        case "$i" in
-            -conf=*|-proxy*|-rpc*)
-                rpcargs=( "${rpcargs[@]}" "$i" )
-                ;;
-        esac
-    done
-    $bitcoind "${rpcargs[@]}" "$@"
-}
-
-# Add bitcoin accounts to COMPREPLY
-_bitcoin_accounts() {
-    local accounts
-    accounts=$(_bitcoin_rpc listaccounts | awk '/".*"/ { a=$1; gsub(/"/, "", a); print a}')
-    COMPREPLY=( "${COMPREPLY[@]}" $( compgen -W "$accounts" -- "$cur" ) )
-}
-
 _bitcoind() {
    local cur prev words=() cword
    local bitcoind

-    # save and use original argument to invoke bitcoind
-    # bitcoind might not be in $PATH
+    # save and use original argument to invoke bitcoind for -help
+    # it might not be in $PATH
    bitcoind="$1"

    COMPREPLY=()
    _get_comp_words_by_ref -n = cur prev words cword

-    if ((cword > 4)); then
-        case ${words[cword-4]} in
-            listtransactions)
-                COMPREPLY=( $( compgen -W "true false" -- "$cur" ) )
-                return 0
-                ;;
-            signrawtransaction)
-                COMPREPLY=( $( compgen -W "ALL NONE SINGLE ALL|ANYONECANPAY NONE|ANYONECANPAY SINGLE|ANYONECANPAY" -- "$cur" ) )
-                return 0
-                ;;
-        esac
-    fi
-
-    if ((cword > 3)); then
-        case ${words[cword-3]} in
-            addmultisigaddress)
-                _bitcoin_accounts
-                return 0
-                ;;
-            getbalance|gettxout|importaddress|importprivkey|listreceivedbyaccount|listreceivedbyaddress|listsinceblock)
-                COMPREPLY=( $( compgen -W "true false" -- "$cur" ) )
-                return 0
-                ;;
-        esac
-    fi
-
-    if ((cword > 2)); then
-        case ${words[cword-2]} in
-            addnode)
-                COMPREPLY=( $( compgen -W "add remove onetry" -- "$cur" ) )
-                return 0
-                ;;
-            getblock|getrawtransaction|gettransaction|listaccounts|listreceivedbyaccount|listreceivedbyaddress|sendrawtransaction)
-                COMPREPLY=( $( compgen -W "true false" -- "$cur" ) )
-                return 0
-                ;;
-            move|setaccount)
-                _bitcoin_accounts
-                return 0
-                ;;
-        esac
-    fi
-
-    case "$prev" in
-        backupwallet|dumpwallet|importwallet)
-            _filedir
-            return 0
-            ;;
-        getmempool|lockunspent|setgenerate)
-            COMPREPLY=( $( compgen -W "true false" -- "$cur" ) )
-            return 0
-            ;;
-        getaccountaddress|getaddressesbyaccount|getbalance|getnewaddress|getreceivedbyaccount|listtransactions|move|sendfrom|sendmany)
-            _bitcoin_accounts
-            return 0
-            ;;
-    esac
-
    case "$cur" in
-        -conf=*|-pid=*|-loadblock=*|-wallet=*)
+        -conf=*|-pid=*|-loadblock=*|-rootcertificates=*|-rpccookiefile=*|-wallet=*)
            cur="${cur#*=}"
            _filedir
            return 0
@@ -110,20 +29,14 @@ _bitcoind() {
            return 0
            ;;
        *)
-            local helpopts commands

-            # only parse --help if senseful
+            # only parse -help if sensible
            if [[ -z "$cur" || "$cur" =~ ^- ]]; then
-                helpopts=$($bitcoind --help 2>&1 | awk '$1 ~ /^-/ { sub(/=.*/, "="); print $1 }' )
+                local helpopts
+                helpopts=$($bitcoind -help 2>&1 | awk '$1 ~ /^-/ { sub(/=.*/, "="); print $1 }' )
+                COMPREPLY=( $( compgen -W "$helpopts" -- "$cur" ) )
            fi

-            # only parse help if senseful
-            if [[ -z "$cur" || "$cur" =~ ^[a-z] ]]; then
-                commands=$(_bitcoin_rpc help 2>/dev/null | awk '$1 ~ /^[a-z]/ { print $1; }')
-            fi
-
-            COMPREPLY=( $( compgen -W "$helpopts $commands" -- "$cur" ) )
-
            # Prevent space if an argument is desired
            if [[ $COMPREPLY == *= ]]; then
                compopt -o nospace
@@ -131,10 +44,8 @@ _bitcoind() {
            return 0
            ;;
    esac
-}
-
-complete -F _bitcoind bitcoind bitcoin-cli
-}
+} &&
+complete -F _bitcoind bitcoind bitcoin-qt

 # Local variables:
 # mode: shell-script
--- a/contrib/debian/bitcoin-qt.desktop
+++ b/contrib/debian/bitcoin-qt.desktop
@@ -1,7 +1,8 @@
 [Desktop Entry]
-Encoding=UTF-8
-Name=Bitcoin
-Comment=Bitcoin P2P Cryptocurrency
+Version=1.0
+Name=Bitcoin Core
+Comment=Connect to the Bitcoin P2P Network
+Comment[de]=Verbinde mit dem Bitcoin peer-to-peer Netzwerk
 Comment[fr]=Bitcoin, monnaie virtuelle cryptographique pair à pair
 Comment[tr]=Bitcoin, eşten eşe kriptografik sanal para birimi
 Exec=bitcoin-qt %u
@@ -10,3 +11,4 @@ Type=Application
 Icon=bitcoin128
 MimeType=x-scheme-handler/bitcoin;
 Categories=Office;Finance;
+StartupWMClass=Bitcoin-qt
--- a/contrib/debian/bitcoin-qt.manpages
+++ b/contrib/debian/bitcoin-qt.manpages
@@ -0,0 +1 @@
+doc/man/bitcoin-qt.1
--- a/contrib/debian/bitcoin-tx.bash-completion
+++ b/contrib/debian/bitcoin-tx.bash-completion
@@ -0,0 +1 @@
+contrib/bitcoin-tx.bash-completion	bitcoin-tx
--- a/contrib/debian/bitcoin-tx.manpages
+++ b/contrib/debian/bitcoin-tx.manpages
@@ -0,0 +1 @@
+doc/man/bitcoin-tx.1
--- a/contrib/debian/bitcoind.bash-completion
+++ b/contrib/debian/bitcoind.bash-completion
@@ -1 +1,2 @@
 contrib/bitcoind.bash-completion	bitcoind
+contrib/bitcoin-cli.bash-completion	bitcoin-cli
--- a/contrib/debian/bitcoind.manpages
+++ b/contrib/debian/bitcoind.manpages
@@ -1,3 +1,2 @@
-debian/manpages/bitcoind.1
-debian/manpages/bitcoin.conf.5
-debian/manpages/bitcoin-cli.1
+doc/man/bitcoind.1
+doc/man/bitcoin-cli.1
--- a/contrib/debian/changelog
+++ b/contrib/debian/changelog
@@ -1,3 +1,122 @@
+bitcoin (0.14.1-trusty4) trusty; urgency=medium
+
+  * Re-enable UPnP support.
+
+ -- Matt Corallo (BlueMatt) <matt@mattcorallo.com>  Fri, 05 May 2017 13:28:00 -0400
+
+bitcoin (0.14.1-trusty3) trusty; urgency=medium
+
+  * Build with qt5 if we are on a non-Ubuntu (ie non-Unity) distro.
+
+ -- Matt Corallo (BlueMatt) <matt@mattcorallo.com>  Thu, 04 May 2017 17:13:00 -0400
+
+bitcoin (0.14.1-trusty2) trusty; urgency=medium
+
+  * Bump minimum boost version in deps.
+
+ -- Matt Corallo (BlueMatt) <matt@mattcorallo.com>  Thu, 04 May 2017 17:12:00 -0400
+
+bitcoin (0.14.1-trusty1) trusty; urgency=medium
+
+  * New upstream release.
+
+ -- Matt Corallo (BlueMatt) <matt@mattcorallo.com>  Sat, 22 Apr 2017 17:10:00 -0400
+
+bitcoin (0.14.0-trusty1) trusty; urgency=medium
+
+  * New upstream release.
+
+ -- Matt Corallo (BlueMatt) <matt@mattcorallo.com>  Wed, 08 Mar 2017 10:30:00 -0500
+
+bitcoin (0.13.2-trusty1) trusty; urgency=medium
+
+  * New upstream release.
+
+ -- Matt Corallo (BlueMatt) <matt@mattcorallo.com>  Thu, 05 Jan 2017 09:59:00 -0500
+
+bitcoin (0.13.1-trusty2) trusty; urgency=medium
+
+  * Revert to Qt4, due to https://github.com/bitcoin/bitcoin/issues/9038
+
+ -- Matt Corallo (BlueMatt) <matt@mattcorallo.com>  Mon, 31 Oct 2016 11:16:00 -0400
+
+bitcoin (0.13.1-trusty1) trusty; urgency=medium
+
+  * New upstream release.
+  * Backport updated bitcoin-qt.desktop from upstream master
+  * Add zmq dependency
+  * Switch to Qt5 (breaks precise, but that was already broken by C++11)
+
+ -- Matt Corallo (BlueMatt) <matt@mattcorallo.com>  Thu, 27 Oct 2016 17:32:00 -0400
+
+bitcoin (0.13.0-trusty1) trusty; urgency=medium
+
+  * New upstream release.
+
+ -- Matt Corallo (BlueMatt) <matt@mattcorallo.com>  Sun, 04 Sep 2016 22:09:00 -0400
+
+bitcoin (0.12.1-trusty1) trusty; urgency=medium
+
+  * New upstream release.
+
+ -- Matt Corallo (BlueMatt) <matt@mattcorallo.com>  Mon, 18 Apr 2016 14:26:00 -0700
+
+bitcoin (0.12.0-trusty6) trusty; urgency=medium
+
+  * Fix program-options dep.
+
+ -- Matt Corallo (BlueMatt) <matt@mattcorallo.com>  Fri, 25 Mar 2016 21:41:00 -0700
+
+bitcoin (0.12.0-trusty5) trusty; urgency=medium
+
+  * Test explicit --with-gui
+
+ -- Matt Corallo (BlueMatt) <matt@mattcorallo.com>  Tue, 23 Feb 2015 23:25:00 -0800
+
+bitcoin (0.12.0-trusty4) trusty; urgency=medium
+
+  * Fix libevent-dev dep.
+
+ -- Matt Corallo (BlueMatt) <matt@mattcorallo.com>  Tue, 23 Feb 2015 23:25:00 -0800
+
+bitcoin (0.12.0-trusty3) trusty; urgency=medium
+
+  * Fix precise boost dep.
+
+ -- Matt Corallo (BlueMatt) <matt@mattcorallo.com>  Tue, 23 Feb 2015 19:55:00 -0800
+
+bitcoin (0.12.0-trusty2) trusty; urgency=medium
+
+  * Fix libevent dep.
+
+ -- Matt Corallo (BlueMatt) <matt@mattcorallo.com>  Tue, 23 Feb 2015 19:53:00 -0800
+
+bitcoin (0.12.0-trusty1) trusty; urgency=medium
+
+  * New upstream release
+  * Various updates to contrib/debian were merged, a few were not
+
+ -- Matt Corallo (BlueMatt) <matt@mattcorallo.com>  Tue, 23 Feb 2015 19:29:00 -0800
+
+bitcoin (0.11.2-trusty1) trusty; urgency=low
+
+  * New upstream release.
+
+ -- Matt Corallo (BlueMatt) <matt@mattcorallo.com>  Fri, 13 Nov 2015 18:39:00 -0800
+
+bitcoin (0.11.1-trusty2) trusty; urgency=low
+
+  * Remove minupnpc builddep.
+
+ -- Matt Corallo (BlueMatt) <matt@mattcorallo.com>  Wed, 14 Oct 2015 23:06:00 -1000
+
+bitcoin (0.11.1-trusty1) trusty; urgency=high
+
+  * New upstream release.
+  * Disable all UPnP support.
+
+ -- Matt Corallo (BlueMatt) <matt@mattcorallo.com>  Wed, 14 Oct 2015 13:57:00 -1000
+
 bitcoin (0.11.0-precise1) precise; urgency=medium

  * New upstream release.
@@ -179,7 +298,7 @@ bitcoin (0.5.3-natty0) natty; urgency=low
 bitcoin (0.5.2-natty1) natty; urgency=low

  * Remove mentions on anonymity in package descriptions and manpage.
-    These should never have been there, bitcoin isn't anonymous without
+    These should never have been there, bitcoin isnt anonymous without
    a ton of work that virtually no users will ever be willing and
    capable of doing

@@ -220,7 +339,7 @@ bitcoin (0.5.0~rc1-natty1) natty; urgency=low

  * Add test_bitcoin to build test
  * Fix clean
-  * Remove unnecessary build-dependancies
+  * Remove uneccessary build-dependancies

 -- Matt Corallo <matt@bluematt.me>  Wed, 26 Oct 2011 14:37:18 -0400

@@ -380,7 +499,7 @@ bitcoin (0.3.20.01~dfsg-1) unstable; urgency=low

 bitcoin (0.3.19~dfsg-6) unstable; urgency=low

-  * Fix override aggressive optimizations.
+  * Fix override agressive optimizations.
  * Fix tighten build-dependencies to really fit backporting to Lenny:
    + Add fallback build-dependency on libdb4.6++-dev.
    + Tighten unversioned Boost build-dependencies to recent versions,
--- a/contrib/debian/control
+++ b/contrib/debian/control
@@ -1,29 +1,32 @@
 Source: bitcoin
 Section: utils
 Priority: optional
-Maintainer: Jonas Smedegaard <dr@jones.dk>
-Uploaders: Micah Anderson <micah@debian.org>
+Maintainer: Matt Corallo <matt@mattcorallo.com>
+Uploaders: Matt Corallo <matt@mattcorallo.com>
 Build-Depends: debhelper,
 devscripts,
 automake,
 libtool,
 bash-completion,
- libboost-system-dev (>> 1.35) | libboost-system1.35-dev,
 libdb4.8++-dev,
 libssl-dev,
 pkg-config,
- libminiupnpc8-dev | libminiupnpc-dev (>> 1.6),
- libboost-filesystem-dev (>> 1.35) | libboost-filesystem1.35-dev,
- libboost-program-options-dev (>> 1.35) | libboost-program-options1.35-dev,
- libboost-thread-dev (>> 1.35) | libboost-thread1.35-dev,
- libboost-test-dev (>> 1.35) | libboost-test1.35-dev,
- qt4-qmake,
- libqt4-dev,
+ libevent-dev,
+ libboost-system1.48-dev | libboost-system-dev (>> 1.47),
+ libboost-filesystem1.48-dev | libboost-filesystem-dev (>> 1.47),
+ libboost-program-options1.48-dev | libboost-program-options-dev (>> 1.47),
+ libboost-thread1.48-dev | libboost-thread-dev (>> 1.47),
+ libboost-test1.48-dev | libboost-test-dev (>> 1.47),
+ libboost-chrono1.48-dev | libboost-chrono-dev (>> 1.47),
+ libminiupnpc8-dev | libminiupnpc-dev,
+ qt4-qmake, libqt4-dev,
+ qttools5-dev-tools, qttools5-dev,
 libqrencode-dev,
 libprotobuf-dev, protobuf-compiler,
- python
+ python,
+ libzmq3-dev
 Standards-Version: 3.9.2
-Homepage: https://www.bitcoin.org/
+Homepage: https://bitcoincore.org/
 Vcs-Git: git://github.com/bitcoin/bitcoin.git
 Vcs-Browser: https://github.com/bitcoin/bitcoin

@@ -31,11 +34,11 @@ Package: bitcoind
 Architecture: any
 Depends: ${shlibs:Depends}, ${misc:Depends}
 Description: peer-to-peer network based digital currency - daemon
- Bitcoin is an experimental new digital currency that enables instant
- payments to anyone, anywhere in the world. Bitcoin uses peer-to-peer
- technology to operate with no central authority: managing transactions
- and issuing money are carried out collectively by the network. Bitcoin Core
- is the name of the open source software which enables the use of this currency.
+ Bitcoin is a free open source peer-to-peer electronic cash system that
+ is completely decentralized, without the need for a central server or
+ trusted parties.  Users hold the crypto keys to their own money and
+ transact directly with each other, with the help of a P2P network to
+ check for double-spending.
 .
 This package provides the daemon, bitcoind, and the CLI tool
 bitcoin-cli to interact with the daemon.
@@ -44,11 +47,11 @@ Package: bitcoin-qt
 Architecture: any
 Depends: ${shlibs:Depends}, ${misc:Depends}
 Description: peer-to-peer network based digital currency - Qt GUI
- Bitcoin is an experimental new digital currency that enables instant
- payments to anyone, anywhere in the world. Bitcoin uses peer-to-peer
- technology to operate with no central authority: managing transactions
- and issuing money are carried out collectively by the network. Bitcoin Core
- is the name of the open source software which enables the use of this currency.
+ Bitcoin is a free open source peer-to-peer electronic cash system that
+ is completely decentralized, without the need for a central server or
+ trusted parties.  Users hold the crypto keys to their own money and
+ transact directly with each other, with the help of a P2P network to
+ check for double-spending.
 .
 This package provides Bitcoin-Qt, a GUI for Bitcoin based on Qt.

@@ -56,11 +59,11 @@ Package: bitcoin-tx
 Architecture: any
 Depends: ${shlibs:Depends}, ${misc:Depends}
 Description: peer-to-peer digital currency - standalone transaction tool
- Bitcoin is an experimental new digital currency that enables instant
- payments to anyone, anywhere in the world. Bitcoin uses peer-to-peer
- technology to operate with no central authority: managing transactions
- and issuing money are carried out collectively by the network. Bitcoin Core
- is the name of the open source software which enables the use of this currency.
+ Bitcoin is a free open source peer-to-peer electronic cash system that
+ is completely decentralized, without the need for a central server or
+ trusted parties.  Users hold the crypto keys to their own money and
+ transact directly with each other, with the help of a P2P network to
+ check for double-spending.
 .
 This package provides bitcoin-tx, a command-line transaction creation
 tool which can be used without a bitcoin daemon.  Some means of
--- a/contrib/debian/copyright
+++ b/contrib/debian/copyright
@@ -5,7 +5,7 @@ Upstream-Contact: Satoshi Nakamoto <satoshin@gmx.com>
 Source: https://github.com/bitcoin/bitcoin

 Files: *
-Copyright: 2009-2015, Bitcoin Core Developers
+Copyright: 2009-2018, Bitcoin Core Developers
 License: Expat
 Comment: The Bitcoin Core Developers encompasses the current developers listed on bitcoin.org,
         as well as the numerous contributors to the project.
@@ -15,12 +15,17 @@ Copyright: 2010-2011, Jonas Smedegaard <dr@jones.dk>
           2011, Matt Corallo <matt@bluematt.me>
 License: GPL-2+

-Files: debian/manpages/*
-Copyright: Micah Anderson <micah@debian.org>
-License: GPL-3+
+Files: src/secp256k1/build-aux/m4/ax_jni_include_dir.m4
+Copyright: 2008 Don Anderson <dda@sleepycat.com>
+License: GNU-All-permissive-License
+
+Files: src/secp256k1/build-aux/m4/ax_prog_cc_for_build.m4
+Copyright: 2008 Paolo Bonzini <bonzini@gnu.org>
+License: GNU-All-permissive-License

 Files: src/qt/res/icons/add.png
       src/qt/res/icons/address-book.png
+       src/qt/res/icons/chevron.png
       src/qt/res/icons/configure.png
       src/qt/res/icons/debugwindow.png
       src/qt/res/icons/edit.png
@@ -50,12 +55,21 @@ Comment: Site: https://github.com/stephenhutchings/typicons.font

 Files: src/qt/res/icons/connect*.png
       src/qt/res/src/connect-*.svg
+       src/qt/res/icons/network_disabled.png
+       src/qt/res/src/network_disabled.svg
 Copyright: Marco Falke
+           Luke Dashjr
 License: Expat
 Comment: Inspired by Stephan Hutchings Typicons

 Files: src/qt/res/icons/tx_mined.png
       src/qt/res/src/mine.svg
+       src/qt/res/icons/fontbigger.png
+       src/qt/res/icons/fontsmaller.png
+       src/qt/res/icons/hd_disabled.png
+       src/qt/res/src/hd_disabled.svg
+       src/qt/res/icons/hd_enabled.png
+       src/qt/res/src/hd_enabled.svg
 Copyright: Jonas Schnelli
 License: Expat
 Comment:
@@ -100,6 +114,12 @@ License: Expat
 TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

+License: GNU-All-permissive-License
+ Copying and distribution of this file, with or without modification, are
+ permitted in any medium without royalty provided the copyright notice
+ and this notice are preserved. This file is offered as-is, without any
+ warranty.
+
 License: GPL-2+
 This program is free software; you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
--- a/contrib/debian/examples/bitcoin.conf
+++ b/contrib/debian/examples/bitcoin.conf
@@ -67,9 +67,30 @@
 # This option can be specified multiple times (default: bind to all interfaces)
 #rpcbind=<addr>

-# You must set rpcuser and rpcpassword to secure the JSON-RPC api
+# If no rpcpassword is set, rpc cookie auth is sought. The default `-rpccookiefile` name
+# is .cookie and found in the `-datadir` being used for bitcoind. This option is typically used
+# when the server and client are run as the same user.
+#
+# If not, you must set rpcuser and rpcpassword to secure the JSON-RPC api. The first
+# method(DEPRECATED) is to set this pair for the server and client:
 #rpcuser=Ulysseys
 #rpcpassword=YourSuperGreatPasswordNumber_DO_NOT_USE_THIS_OR_YOU_WILL_GET_ROBBED_385593
+#
+# The second method `rpcauth` can be added to server startup argument. It is set at initialization time
+# using the output from the script in share/rpcauth/rpcauth.py after providing a username:
+#
+# ./share/rpcauth/rpcauth.py alice
+# String to be appended to bitcoin.conf:
+# rpcauth=alice:f7efda5c189b999524f151318c0c86$d5b51b3beffbc02b724e5d095828e0bc8b2456e9ac8757ae3211a5d9b16a22ae
+# Your password:
+# DONT_USE_THIS_YOU_WILL_GET_ROBBED_8ak1gI25KFTvjovL3gAM967mies3E=
+#
+# On client-side, you add the normal user/password pair to send commands:
+#rpcuser=alice
+#rpcpassword=DONT_USE_THIS_YOU_WILL_GET_ROBBED_8ak1gI25KFTvjovL3gAM967mies3E=
+#
+# You can even add multiple entries of these to the server conf file, and client can use any of them:
+# rpcauth=bob:b2dd077cb54591a2f3139e69a897ac$4e71f08d48b4347cf8eff3815c0e25ae2e9a4340474079f55705f40574f4ec99

 # How many seconds bitcoin will wait for a complete RPC HTTP request.
 # after the HTTP connection is established. 
@@ -95,12 +116,7 @@
 # running on another host using this option:
 #rpcconnect=127.0.0.1

-# Transaction Fee Changes in 0.10.0
-
-# Send transactions as zero-fee transactions if possible (default: 0)
-#sendfreetransactions=0
-
-# Create transactions that have enough fees (or priority) so they are likely to begin confirmation within n blocks (default: 1).
+# Create transactions that have enough fees so they are likely to begin confirmation within n blocks (default: 6).
 # This setting is over-ridden by the -paytxfee option.
 #txconfirmtarget=n

@@ -115,6 +131,13 @@
 # be validated sooner.
 #paytxfee=0.00

+# Enable pruning to reduce storage requirements by deleting old blocks. 
+# This mode is incompatible with -txindex and -rescan.
+# 0 = default (no pruning).
+# 1 = allows manual pruning via RPC.
+# >=550 = target to stay under in MiB. 
+#prune=550
+
 # User interface options

 # Start Bitcoin minimized
--- a/contrib/debian/manpages/bitcoin-cli.1
+++ b/contrib/debian/manpages/bitcoin-cli.1
@@ -1,45 +0,0 @@
-.TH BITCOIN-CLI "1" "February 2015" "bitcoin-cli 0.10" 
-.SH NAME
-bitcoin-cli \- a remote procedure call client for Bitcoin Core. 
-.SH SYNOPSIS
-bitcoin-cli [options] <command> [params] \- Send command to Bitcoin Core. 
-.TP
-bitcoin-cli [options] help \- Asks Bitcoin Core for a list of supported commands.
-.SH DESCRIPTION
-This manual page documents the bitcoin-cli program. bitcoin-cli is an RPC client used to send commands to Bitcoin Core.
-
-.SH OPTIONS
-.TP
-\fB\-?\fR
-Show the help message.
-.TP
-\fB\-conf=\fR<file>
-Specify configuration file (default: bitcoin.conf).
-.TP
-\fB\-datadir=\fR<dir>
-Specify data directory.
-.TP
-\fB\-testnet\fR
-Connect to a Bitcoin Core instance running in testnet mode.
-.TP
-\fB\-regtest\fR
-Connect to a Bitcoin Core instance running in regtest mode (see documentation for -regtest on bitcoind).
-.TP
-\fB\-rpcuser=\fR<user>
-Username for JSON\-RPC connections.
-.TP
-\fB\-rpcpassword=\fR<pw>
-Password for JSON\-RPC connections.
-.TP
-\fB\-rpcport=\fR<port>
-Listen for JSON\-RPC connections on <port> (default: 8332 or testnet: 18332).
-.TP
-\fB\-rpcconnect=\fR<ip>
-Send commands to node running on <ip> (default: 127.0.0.1).
-
-.SH "SEE ALSO"
-\fBbitcoind\fP, \fBbitcoin.conf\fP
-.SH AUTHOR
-This manual page was written by Ciemon Dunville <ciemon@gmail.com>. Permission is granted to copy, distribute and/or modify this document under the terms of the MIT License.
-
-The complete text of the MIT License can be found on the web at \fIhttp://opensource.org/licenses/MIT\fP.
--- a/contrib/debian/manpages/bitcoin-qt.1
+++ b/contrib/debian/manpages/bitcoin-qt.1
@@ -1,191 +0,0 @@
-.TH BITCOIN-QT "1" "April 2013" "bitcoin-qt 1"
-.SH NAME
-bitcoin-qt \- peer-to-peer network based digital currency
-.SH DESCRIPTION
-.SS "Usage:"
-.IP
-bitcoin\-qt [command\-line options]
-.SH OPTIONS
-.TP
-\-?
-This help message
-.TP
-\fB\-conf=\fR<file>
-Specify configuration file (default: bitcoin.conf)
-.TP
-\fB\-pid=\fR<file>
-Specify pid file (default: bitcoind.pid)
-.TP
-\fB\-gen\fR
-Generate coins
-.TP
-\fB\-gen\fR=\fI0\fR
-Don't generate coins
-.TP
-\fB\-datadir=\fR<dir>
-Specify data directory
-.TP
-\fB\-dbcache=\fR<n>
-Set database cache size in megabytes (default: 25)
-.TP
-\fB\-timeout=\fR<n>
-Specify connection timeout in milliseconds (default: 5000)
-.TP
-\fB\-proxy=\fR<ip:port>
-Connect through SOCKS5 proxy
-.TP
-\fB\-tor=\fR<ip:port>
-Use proxy to reach tor hidden services (default: same as \fB\-proxy\fR)
-.TP
-\fB\-dns\fR
-Allow DNS lookups for \fB\-addnode\fR, \fB\-seednode\fR and \fB\-connect\fR
-.TP
-\fB\-port=\fR<port>
-Listen for connections on <port> (default: 8333 or testnet: 18333)
-.TP
-\fB\-maxconnections=\fR<n>
-Maintain at most <n> connections to peers (default: 125)
-.TP
-\fB\-addnode=\fR<ip>
-Add a node to connect to and attempt to keep the connection open
-.TP
-\fB\-connect=\fR<ip>
-Connect only to the specified node(s)
-.TP
-\fB\-seednode=\fR<ip>
-Connect to a node to retrieve peer addresses, and disconnect
-.TP
-\fB\-externalip=\fR<ip>
-Specify your own public address
-.TP
-\fB\-onlynet=\fR<net>
-Only connect to nodes in network <net> (IPv4, IPv6 or Tor)
-.TP
-\fB\-discover\fR
-Discover own IP address (default: 1 when listening and no \fB\-externalip\fR)
-.TP
-\fB\-checkpoints\fR
-Only accept block chain matching built\-in checkpoints (default: 1)
-.TP
-\fB\-listen\fR
-Accept connections from outside (default: 1 if no \fB\-proxy\fR or \fB\-connect\fR)
-.TP
-\fB\-bind=\fR<addr>
-Bind to given address and always listen on it. Use [host]:port notation for IPv6
-.TP
-\fB\-dnsseed\fR
-Find peers using DNS lookup (default: 1 unless \fB\-connect\fR)
-.TP
-\fB\-banscore=\fR<n>
-Threshold for disconnecting misbehaving peers (default: 100)
-.TP
-\fB\-bantime=\fR<n>
-Number of seconds to keep misbehaving peers from reconnecting (default: 86400)
-.TP
-\fB\-maxreceivebuffer=\fR<n>
-Maximum per\-connection receive buffer, <n>*1000 bytes (default: 5000)
-.TP
-\fB\-maxsendbuffer=\fR<n>
-Maximum per\-connection send buffer, <n>*1000 bytes (default: 1000)
-.TP
-\fB\-upnp\fR
-Use UPnP to map the listening port (default: 1 when listening)
-.TP
-\fB\-paytxfee=\fR<amt>
-Fee per KB to add to transactions you send
-.TP
-\fB\-server\fR
-Accept command line and JSON\-RPC commands
-.TP
-\fB\-testnet\fR
-Use the test network
-.TP
-\fB\-debug\fR
-Output extra debugging information. Implies all other \fB\-debug\fR* options
-.TP
-\fB\-debugnet\fR
-Output extra network debugging information
-.TP
-\fB\-logtimestamps\fR
-Prepend debug output with timestamp
-.TP
-\fB\-shrinkdebugfile\fR
-Shrink debug.log file on client startup (default: 1 when no \fB\-debug\fR)
-.TP
-\fB\-printtoconsole\fR
-Send trace/debug info to console instead of debug.log file
-.TP
-\fB\-rpcuser=\fR<user>
-Username for JSON\-RPC connections
-.TP
-\fB\-rpcpassword=\fR<pw>
-Password for JSON\-RPC connections
-.TP
-\fB\-rpcport=\fR<port>
-Listen for JSON\-RPC connections on <port> (default: 8332 or testnet: 18332)
-.TP
-\fB\-rpcallowip=\fR<ip>
-Allow JSON\-RPC connections from specified IP address
-.TP
-\fB\-rpcthreads=\fR<n>
-Set the number of threads to service RPC calls (default: 4)
-.TP
-\fB\-blocknotify=\fR<cmd>
-Execute command when the best block changes (%s in cmd is replaced by block hash)
-.TP
-\fB\-walletnotify=\fR<cmd>
-Execute command when a wallet transaction changes (%s in cmd is replaced by TxID)
-.TP
-\fB\-alertnotify=\fR<cmd>
-Execute command when a relevant alert is received (%s in cmd is replaced by message)
-.TP
-\fB\-upgradewallet\fR
-Upgrade wallet to latest format
-.TP
-\fB\-keypool=\fR<n>
-Set key pool size to <n> (default: 100)
-.TP
-\fB\-rescan\fR
-Rescan the block chain for missing wallet transactions
-.TP
-\fB\-salvagewallet\fR
-Attempt to recover private keys from a corrupt wallet.dat
-.TP
-\fB\-checkblocks=\fR<n>
-How many blocks to check at startup (default: 288, 0 = all)
-.TP
-\fB\-checklevel=\fR<n>
-How thorough the block verification is (0\-4, default: 3)
-.TP
-\fB\-txindex\fR
-Maintain a full transaction index (default: 0)
-.TP
-\fB\-loadblock=\fR<file>
-Imports blocks from external blk000??.dat file
-.TP
-\fB\-reindex\fR
-Rebuild block chain index from current blk000??.dat files
-.TP
-\fB\-par=\fR<n>
-Set the number of script verification threads (1\-16, 0=auto, default: 0)
-.SS "Block creation options:"
-.TP
-\fB\-blockminsize=\fR<n>
-Set minimum block size in bytes (default: 0)
-.TP
-\fB\-blockmaxsize=\fR<n>
-Set maximum block size in bytes (default: 250000)
-.HP
-\fB\-blockprioritysize=\fR<n> Set maximum size of high\-priority/low\-fee transactions in bytes (default: 27000)
-.PP
-Acceptable ciphers (default: TLSv1+HIGH:!SSLv2:!aNULL:!eNULL:!AH:!3DES:@STRENGTH)
-.SS "UI options:"
-.TP
-\fB\-lang=\fR<lang>
-Set language, for example "de_DE" (default: system locale)
-.TP
-\fB\-min\fR
-Start minimized
-.TP
-\fB\-splash\fR
-Show splash screen on startup (default: 1)
--- a/contrib/debian/manpages/bitcoin.conf.5
+++ b/contrib/debian/manpages/bitcoin.conf.5
@@ -1,79 +0,0 @@
-.TH BITCOIN.CONF "5" "January 2011" "bitcoin.conf 3.19"
-.SH NAME
-bitcoin.conf \- bitcoin configuration file
-.SH SYNOPSIS
-All command-line options (except for '\-conf') may be specified in a configuration file, and all configuration file options may also be specified on the command line. Command-line options override values set in the configuration file.
-.TP
-The configuration file is a list of 'setting=value' pairs, one per line, with optional comments starting with the '#' character.
-.TP
-The configuration file is not automatically created; you can create it using your favorite plain-text editor. By default, bitcoind(1) will look for a file named bitcoin.conf(5) in the bitcoin data directory, but both the data directory and the configuration file path may be changed using the '\-datadir' and '\-conf' command-line arguments.
-.SH LOCATION
-bitcoin.conf should be located in $HOME/.bitcoin
-.SH NETWORK-RELATED SETTINGS
-.TP
-.TP
-\fBtestnet=\fR[\fI'1'\fR|\fI'0'\fR]
-Enable or disable run on the test network instead of the real *bitcoin* network.
-.TP
-\fBproxy=\fR\fI'127.0.0.1:9050'\fR
-Connect via a socks4 proxy.
-.TP
-\fBaddnode=\fR\fI'10.0.0.2:8333'\fR
-Use as many *addnode=* settings as you like to connect to specific peers.
-.TP
-\fBconnect=\fR\fI'10.0.0.1:8333'\fR
-Use as many *connect=* settings as you like to connect ONLY to specific peers.
-.TP
-\fRmaxconnections=\fR\fI'value'\fR
-Maximum number of inbound+outbound connections.
-.SH JSON-RPC OPTIONS
-.TP
-\fBserver=\fR[\fI'1'\fR|\fI'0'\fR]
-Tells *bitcoin* to accept or not accept JSON-RPC commands.
-.TP
-\fBrpcuser=\fR\fI'username'\fR
-You must set *rpcuser* to secure the JSON-RPC api.
-.TP
-\fBrpcpassword=\fR\fI'password'\fR
-You must set *rpcpassword* to secure the JSON-RPC api.
-.TP
-\fBrpcallowip=\fR\fI'192.168.1.*'\fR
-By default, only RPC connections from localhost are allowed. Specify as many *rpcallowip=* settings as you like to allow connections from other hosts (and you may use * as a wildcard character).
-.TP
-\fBrpcport=\fR\fI'8332'\fR
-Listen for RPC connections on this TCP port.
-.TP
-\fBrpcconnect=\fR\fI'127.0.0.1'\fR
-You can use *bitcoin* or *bitcoind(1)* to send commands to *bitcoin*/*bitcoind(1)* running on another host using this option.
-.TP
-.SH MISCELLANEOUS OPTIONS
-.TP
-\fBgen=\fR[\fI'0'\fR|\fI'1'\fR]
-Enable or disable attempt to generate bitcoins.
-.TP
-\fB4way=\fR[\fI'0'\fR|\fI'1'\fR]
-Enable or disable use SSE instructions to try to generate bitcoins faster.
-.TP
-\fBkeypool=\fR\fI'100'\fR
-Pre-generate this many public/private key pairs, so wallet backups will be valid for both prior transactions and several dozen future transactions.
-.TP
-\fBpaytxfee=\fR\fI'0.00'\fR
-Pay an optional transaction fee every time you send bitcoins. Transactions with fees are more likely than free transactions to be included in generated blocks, so may be validated sooner.
-.TP
-\fBallowreceivebyip=\fR\fI'1'\fR
-Allow direct connections for the 'pay via IP address' feature.
-.TP
-.SH USER INTERFACE OPTIONS
-.TP
-\fBmin=\fR[\fI'0'\fR|\fI'1'\fR]
-Enable or disable start bitcoind minimized.
-.TP
-\fBminimizetotray=\fR[\fI'0'\fR|\fI'1'\fR]
-Enable or disable minimize to the system tray.
-.SH "SEE ALSO"
-bitcoind(1)
-.SH AUTHOR
-This manual page was written by Micah Anderson <micah@debian.org> for the Debian system (but may be used by others). Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 3 or any later version published by the Free Software Foundation.
-
-On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL.
-
--- a/contrib/debian/manpages/bitcoind.1
+++ b/contrib/debian/manpages/bitcoind.1
@@ -1,195 +0,0 @@
-.TH BITCOIND "1" "January 2011" "bitcoind 3.19" 
-.SH NAME
-bitcoind \- peer-to-peer network based digital currency
-.SH SYNOPSIS
-bitcoin [options] <command> [params]  
-.TP
-bitcoin [options] help <command> \- Get help for a command
-.SH DESCRIPTION
-This  manual page documents the bitcoind program. Bitcoin is a peer-to-peer digital currency. Peer-to-peer (P2P) means that there is no central authority to issue new money or keep track of transactions. Instead, these tasks are managed collectively by the nodes of the network. Advantages:
-
-Bitcoins can be sent easily through the Internet, without having to trust middlemen. Transactions are designed to be irreversible. Be safe from instability caused by fractional reserve banking and central banks. The limited inflation of the Bitcoin system’s money supply is distributed evenly (by CPU power) throughout the network, not monopolized by banks.
-
-.SH OPTIONS
-.TP
-\fB\-conf=\fR<file>
-Specify configuration file (default: bitcoin.conf)
-.TP
-\fB\-gen\fR
-Generate coins
-.TP
-\fB\-gen\fR=\fI0\fR
-Don't generate coins
-.TP
-\fB\-min\fR
-Start minimized
-.TP
-\fB\-datadir=\fR<dir>
-Specify data directory
-.TP
-\fB\-proxy=\fR<ip:port>
-Connect through SOCKS5 proxy
-.TP
-\fB\-addnode=\fR<ip>
-Add a node to connect to
-.TP
-\fB\-connect=\fR<ip>
-Connect only to the specified node
-.TP
-\fB\-paytxfee=\fR<amt>
-Fee per KB to add to transactions you send
-.TP
-\fB\-server\fR
-Accept command line and JSON\-RPC commands
-.TP
-\fB\-daemon\fR
-Run in the background as a daemon and accept commands
-.TP
-\fB\-testnet\fR
-Use the test network
-.TP
-\fB\-rpcuser=\fR<user>
-Username for JSON\-RPC connections
-.TP
-\fB\-rpcpassword=\fR<pw>
-Password for JSON\-RPC connections
-.TP
-\fB\-rpcport=\fR<port>
-Listen for JSON\-RPC connections on <port>
-.TP
-\fB\-rpcallowip=\fR<ip>
-Allow JSON\-RPC connections from specified IP address
-.TP
-\fB\-rpcconnect=\fR<ip>
-Send commands to node running on <ip>
-.TP
-\-?
-This help message
-.SH COMMANDS
-.TP
-\fBbackupwallet 'destination'\fR
-Safely copies *wallet.dat* to 'destination', which can be a directory or a path with filename.
-.TP
-\fBgetaccount 'bitcoinaddress'\fR
-DEPRECATED. Returns the account associated with the given address.
-.TP
-\fBsetaccount 'bitcoinaddress' ['account']\fR
-DEPRECATED. Sets the ['account'] associated with the given address. ['account'] may be omitted to remove an address from ['account'].
-.TP
-\fBgetaccountaddress 'account'\fR
-DEPRECATED. Returns a new bitcoin address for 'account'.
-.TP
-\fBgetaddressesbyaccount 'account'\fR
-DEPRECATED. Returns the list of addresses associated with the given 'account'.
-.TP
-\fBgetbalance 'account'\fR
-Returns the server's available balance, or the balance for 'account' (accounts are deprecated).
-.TP
-\fBgetblockcount\fR
-Returns the number of blocks in the longest block chain.
-.TP
-\fBgetblocknumber\fR
-Returns the block number of the latest block in the longest block chain.
-.TP
-\fBgetconnectioncount\fR
-Returns the number of connections to other nodes.
-.TP
-\fBgetdifficulty\fR
-Returns the proof-of-work difficulty as a multiple of the minimum difficulty.
-.TP
-\fBgetgenerate\fR
-Returns boolean true if server is trying to generate bitcoins, false otherwise.
-.TP
-\fBsetgenerate 'generate' ['genproclimit']\fR
-Generation is limited to ['genproclimit'] processors, \-1 is unlimited.
-.TP
-\fBgethashespersec\fR
-Returns a recent hashes per second performance measurement while generating.
-.TP
-\fBgetinfo\fR
-Returns an object containing server information.
-.TP
-\fBgetnewaddress 'account'\fR
-Returns a new bitcoin address for receiving payments. If 'account' is specified (deprecated), it is added to the address book so payments received with the address will be credited to 'account'.
-.TP
-\fBgetreceivedbyaccount 'account' ['minconf=1']\fR
-DEPRECATED. Returns the total amount received by addresses associated with 'account' in transactions with at least ['minconf'] confirmations.
-.TP
-\fBgetreceivedbyaddress 'bitcoinaddress' ['minconf=1']\fR
-Returns the total amount received by 'bitcoinaddress' in transactions with at least ['minconf'] confirmations.
-.TP
-\fBgettransaction 'txid'\fR
-Returns information about a specific transaction, given hexadecimal transaction ID.
-.TP
-\fBgetwork 'data'\fR
-If 'data' is specified, tries to solve the block and returns true if it was successful. If 'data' is not specified, returns formatted hash 'data' to work on:
-
-    "midstate" : precomputed hash state after hashing the first half of the data.
-    "data"     : block data.
-    "hash1"    : formatted hash buffer for second hash.
-    "target"   : little endian hash target.
-.TP
-\fBhelp 'command'\fR
-List commands, or get help for a command.
-.TP
-\fBlistaccounts ['minconf=1']\fR
-DEPRECATED. List accounts and their current balances.
-     *note: requires bitcoin 0.3.20 or later.
-.TP
-\fBlistreceivedbyaccount ['minconf=1'] ['includeempty=false']\fR
-['minconf'] is the minimum number of confirmations before payments are included. ['includeempty'] whether to include addresses that haven't received any payments. Returns an array of objects containing:
-
-    "account"       : DEPRECATED. the account of the receiving address.
-    "amount"        : total amount received by the address.
-    "confirmations" : number of confirmations of the most recent transaction included.
-.TP
-\fBlistreceivedbyaddress ['minconf=1'] ['includeempty=false']\fR
-['minconf'] is the minimum number of confirmations before payments are included. ['includeempty'] whether to include addresses that haven't received any payments. Returns an array of objects containing:
-
-    "address"       : receiving address.
-    "account"       : DEPRECATED. the account of the receiving address.
-    "amount"        : total amount received by the address.
-    "confirmations" : number of confirmations of the most recent transaction included.
-.TP
-\fBlisttransactions 'account' ['count=10']\fR
-Returns a list of the last ['count'] transactions for 'account' \- for all accounts if 'account' is not specified or is "*". Each entry in the list may contain:
-
-    "category"      : will be generate, send, receive, or move.
-    "amount"        : amount of transaction.
-    "fee"           : Fee (if any) paid (only for send transactions).
-    "confirmations" : number of confirmations (only for generate/send/receive).
-    "txid"          : transaction ID (only for generate/send/receive).
-    "otheraccount"  : account funds were moved to or from (only for move).
-    "message"       : message associated with transaction (only for send).
-    "to"            : message-to associated with transaction (only for send).
-
-    *note: requires bitcoin 0.3.20 or later.
-.TP
-\fBmove <'fromaccount'> <'toaccount'> <'amount'> ['minconf=1'] ['comment']\fR
-DEPRECATED. Moves funds between accounts.
-.TP
-\fBsendfrom* <'account'> <'bitcoinaddress'> <'amount'> ['minconf=1'] ['comment'] ['comment-to']\fR
-DEPRECATED. Sends amount from account's balance to 'bitcoinaddress'. This method will fail if there is less than amount bitcoins with ['minconf'] confirmations in the account's balance (unless account is the empty-string-named default account; it behaves like the *sendtoaddress* method). Returns transaction ID on success.
-.TP     
-\fBsendtoaddress 'bitcoinaddress' 'amount' ['comment'] ['comment-to']\fR
-Sends amount from the server's available balance to 'bitcoinaddress'. amount is a real and is rounded to the nearest 0.01. Returns transaction id on success.
-.TP    
-\fBstop\fR
-Stops the bitcoin server.
-.TP    
-\fBvalidateaddress 'bitcoinaddress'\fR
-Checks that 'bitcoinaddress' looks like a proper bitcoin address. Returns an object containing:
-
-    "isvalid" : true or false.
-    "ismine"  : true if the address is in the server's wallet.
-    "address" : bitcoinaddress.
-
-    *note: ismine and address are only returned if the address is valid.
-
-.SH "SEE ALSO"
-bitcoin.conf(5)
-.SH AUTHOR
-This manual page was written by Micah Anderson <micah@debian.org> for the Debian system (but may be used by others). Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 3 or any later version published by the Free Software Foundation.
-
-On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL.
-
--- a/contrib/debian/rules
+++ b/contrib/debian/rules
@@ -5,9 +5,6 @@
 #build/bitcoind::
 #	$(if $(filter nocheck,$(DEB_BUILD_OPTIONS)),,src/test_bitcoin)

-DEB_INSTALL_EXAMPLES_bitcoind += debian/examples/*
-DEB_INSTALL_MANPAGES_bitcoind += debian/manpages/*
-
 %:
 	dh --with bash-completion $@

@@ -15,10 +12,12 @@ override_dh_auto_clean:
 	if [ -f Makefile ]; then $(MAKE) distclean; fi
 	rm -rf Makefile.in aclocal.m4 configure src/Makefile.in src/bitcoin-config.h.in src/build-aux src/qt/Makefile.in src/qt/test/Makefile.in src/test/Makefile.in

+QT=$(shell dpkg-vendor --derives-from Ubuntu && echo qt4 || echo qt5)
+
 # Yea, autogen should be run on the source archive, but I like doing git archive
 override_dh_auto_configure:
 	./autogen.sh
-	./configure
+	./configure --with-gui=$(QT)

 override_dh_auto_test:
 	make check
--- a/contrib/devtools/README.md
+++ b/contrib/devtools/README.md
@@ -2,25 +2,88 @@ Contents
 ========
 This directory contains tools for developers working on this repository.

-clang-format.py
+check-doc.py
+============
+
+Check if all command line args are documented. The return value indicates the
+number of undocumented args.
+
+clang-format-diff.py
+===================
+
+A script to format unified git diffs according to [.clang-format](../../src/.clang-format).
+
+For instance, to format the last commit with 0 lines of context,
+the script should be called from the git root folder as follows.
+
+```
+git diff -U0 HEAD~1.. | ./contrib/devtools/clang-format-diff.py -p1 -i -v
+```
+
+copyright\_header.py
+====================
+
+Provides utilities for managing copyright headers of `The Bitcoin Core
+developers` in repository source files. It has three subcommands:
+
+```
+$ ./copyright_header.py report <base_directory> [verbose]
+$ ./copyright_header.py update <base_directory>
+$ ./copyright_header.py insert <file>
+```
+Running these subcommands without arguments displays a usage string.
+
+copyright\_header.py report \<base\_directory\> [verbose]
+---------------------------------------------------------
+
+Produces a report of all copyright header notices found inside the source files
+of a repository. Useful to quickly visualize the state of the headers.
+Specifying `verbose` will list the full filenames of files of each category.
+
+copyright\_header.py update \<base\_directory\> [verbose]
+---------------------------------------------------------
+Updates all the copyright headers of `The Bitcoin Core developers` which were
+changed in a year more recent than is listed. For example:
+```
+// Copyright (c) <firstYear>-<lastYear> The Bitcoin Core developers
+```
+will be updated to:
+```
+// Copyright (c) <firstYear>-<lastModifiedYear> The Bitcoin Core developers
+```
+where `<lastModifiedYear>` is obtained from the `git log` history.
+
+This subcommand also handles copyright headers that have only a single year. In
+those cases:
+```
+// Copyright (c) <year> The Bitcoin Core developers
+```
+will be updated to:
+```
+// Copyright (c) <year>-<lastModifiedYear> The Bitcoin Core developers
+```
+where the update is appropriate.
+
+copyright\_header.py insert \<file\>
+------------------------------------
+Inserts a copyright header for `The Bitcoin Core developers` at the top of the
+file in either Python or C++ style as determined by the file extension. If the
+file is a Python file and it has  `#!` starting the first line, the header is
+inserted in the line below it.
+
+The copyright dates will be set to be `<year_introduced>-<current_year>` where
+`<year_introduced>` is according to the `git log` history. If
+`<year_introduced>` is equal to `<current_year>`, it will be set as a single
+year rather than two hyphenated years.
+
+If the file already has a copyright for `The Bitcoin Core developers`, the
+script will exit.
+
+gen-manpages.sh
 ===============

-A script to format cpp source code according to [.clang-format](../../src/.clang-format). This should only be applied to new files or files which are currently not actively developed on. Also, git subtrees are not subject to formatting.
-
-fix-copyright-headers.py
-========================
-
-Every year newly updated files need to have its copyright headers updated to reflect the current year.
-If you run this script from src/ it will automatically update the year on the copyright header for all
-.cpp and .h files if these have a git commit from the current year.
-
-For example a file changed in 2014 (with 2014 being the current year):
-
-```// Copyright (c) 2009-2013 The Bitcoin Core developers```
-
-would be changed to:
-
-```// Copyright (c) 2009-2014 The Bitcoin Core developers```
+A small script to automatically create manpages in ../../doc/man by running the release binaries with the -help option.
+This requires help2man which can be found at: https://www.gnu.org/software/help2man/

 git-subtree-check.sh
 ====================
@@ -30,22 +93,23 @@ the commit it claims to have been updated to.

 To use, make sure that you have fetched the upstream repository branch in which the subtree is
 maintained:
-* for `src/secp256k1`: https://github.com/bitcoin/secp256k1.git (branch master)
-* for `src/leveldb`: https://github.com/bitcoin/leveldb.git (branch bitcoin-fork)
-* for `src/univalue`: https://github.com/bitcoin/univalue.git (branch master)
+* for `src/secp256k1`: https://github.com/bitcoin-core/secp256k1.git (branch master)
+* for `src/leveldb`: https://github.com/bitcoin-core/leveldb.git (branch bitcoin-fork)
+* for `src/univalue`: https://github.com/bitcoin-core/univalue.git (branch master)
+* for `src/crypto/ctaes`: https://github.com/bitcoin-core/ctaes.git (branch master)

-Usage: `git-subtree-check.sh DIR COMMIT`
+Usage: `git-subtree-check.sh DIR (COMMIT)`

 `COMMIT` may be omitted, in which case `HEAD` is used.

-github-merge.sh
+github-merge.py
 ===============

 A small script to automate merging pull-requests securely and sign them with GPG.

 For example:

-  ./github-merge.sh bitcoin/bitcoin 3077
+  ./github-merge.py 3077

 (in any git repository) will help you merge pull request #3077 for the
 bitcoin/bitcoin repository.
@@ -61,7 +125,7 @@ check or whatever).

 This means that there are no potential race conditions (where a
 pullreq gets updated while you're reviewing it, but before you click
-merge), and when using GPG signatures, that even a compromised github
+merge), and when using GPG signatures, that even a compromised GitHub
 couldn't mess with the sources.

 Setup
--- a/contrib/devtools/check-doc.py
+++ b/contrib/devtools/check-doc.py
@@ -0,0 +1,46 @@
+#!/usr/bin/env python
+# Copyright (c) 2015-2017 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+'''
+This checks if all command line args are documented.
+Return value is 0 to indicate no error.
+
+Author: @MarcoFalke
+'''
+
+from subprocess import check_output
+import re
+import sys
+
+FOLDER_GREP = 'src'
+FOLDER_TEST = 'src/test/'
+CMD_ROOT_DIR = '`git rev-parse --show-toplevel`/%s' % FOLDER_GREP
+CMD_GREP_ARGS = r"egrep -r -I '(map(Multi)?Args(\.count\(|\[)|Get(Bool)?Arg\()\"\-[^\"]+?\"' %s | grep -v '%s'" % (CMD_ROOT_DIR, FOLDER_TEST)
+CMD_GREP_DOCS = r"egrep -r -I 'HelpMessageOpt\(\"\-[^\"=]+?(=|\")' %s" % (CMD_ROOT_DIR)
+REGEX_ARG = re.compile(r'(?:map(?:Multi)?Args(?:\.count\(|\[)|Get(?:Bool)?Arg\()\"(\-[^\"]+?)\"')
+REGEX_DOC = re.compile(r'HelpMessageOpt\(\"(\-[^\"=]+?)(?:=|\")')
+# list unsupported, deprecated and duplicate args as they need no documentation
+SET_DOC_OPTIONAL = set(['-rpcssl', '-benchmark', '-h', '-help', '-socks', '-tor', '-debugnet', '-whitelistalwaysrelay', '-prematurewitness', '-walletprematurewitness', '-promiscuousmempoolflags', '-blockminsize', '-dbcrashratio', '-forcecompactdb', '-usehd'])
+
+def main():
+  used = check_output(CMD_GREP_ARGS, shell=True)
+  docd = check_output(CMD_GREP_DOCS, shell=True)
+
+  args_used = set(re.findall(REGEX_ARG,used))
+  args_docd = set(re.findall(REGEX_DOC,docd)).union(SET_DOC_OPTIONAL)
+  args_need_doc = args_used.difference(args_docd)
+  args_unknown = args_docd.difference(args_used)
+
+  print "Args used        : %s" % len(args_used)
+  print "Args documented  : %s" % len(args_docd)
+  print "Args undocumented: %s" % len(args_need_doc)
+  print args_need_doc
+  print "Args unknown     : %s" % len(args_unknown)
+  print args_unknown
+
+  sys.exit(len(args_need_doc))
+
+if __name__ == "__main__":
+    main()
--- a/contrib/devtools/check-rpc-mappings.py
+++ b/contrib/devtools/check-rpc-mappings.py
@@ -0,0 +1,158 @@
+#!/usr/bin/env python3
+# Copyright (c) 2017 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+"""Check RPC argument consistency."""
+
+from collections import defaultdict
+import os
+import re
+import sys
+
+# Source files (relative to root) to scan for dispatch tables
+SOURCES = [
+    "src/rpc/server.cpp",
+    "src/rpc/blockchain.cpp",
+    "src/rpc/mining.cpp",
+    "src/rpc/misc.cpp",
+    "src/rpc/net.cpp",
+    "src/rpc/rawtransaction.cpp",
+    "src/wallet/rpcwallet.cpp",
+]
+# Source file (relative to root) containing conversion mapping
+SOURCE_CLIENT = 'src/rpc/client.cpp'
+# Argument names that should be ignored in consistency checks
+IGNORE_DUMMY_ARGS = {'dummy', 'arg0', 'arg1', 'arg2', 'arg3', 'arg4', 'arg5', 'arg6', 'arg7', 'arg8', 'arg9'}
+
+class RPCCommand:
+    def __init__(self, name, args):
+        self.name = name
+        self.args = args
+
+class RPCArgument:
+    def __init__(self, names, idx):
+        self.names = names
+        self.idx = idx
+        self.convert = False
+
+def parse_string(s):
+    assert s[0] == '"'
+    assert s[-1] == '"'
+    return s[1:-1]
+
+def process_commands(fname):
+    """Find and parse dispatch table in implementation file `fname`."""
+    cmds = []
+    in_rpcs = False
+    with open(fname, "r") as f:
+        for line in f:
+            line = line.rstrip()
+            if not in_rpcs:
+                if re.match("static const CRPCCommand .*\[\] =", line):
+                    in_rpcs = True
+            else:
+                if line.startswith('};'):
+                    in_rpcs = False
+                elif '{' in line and '"' in line:
+                    m = re.search('{ *("[^"]*"), *("[^"]*"), *&([^,]*), *{([^}]*)} *},', line)
+                    assert m, 'No match to table expression: %s' % line
+                    name = parse_string(m.group(2))
+                    args_str = m.group(4).strip()
+                    if args_str:
+                        args = [RPCArgument(parse_string(x.strip()).split('|'), idx) for idx, x in enumerate(args_str.split(','))]
+                    else:
+                        args = []
+                    cmds.append(RPCCommand(name, args))
+    assert not in_rpcs and cmds, "Something went wrong with parsing the C++ file: update the regexps"
+    return cmds
+
+def process_mapping(fname):
+    """Find and parse conversion table in implementation file `fname`."""
+    cmds = []
+    in_rpcs = False
+    with open(fname, "r") as f:
+        for line in f:
+            line = line.rstrip()
+            if not in_rpcs:
+                if line == 'static const CRPCConvertParam vRPCConvertParams[] =':
+                    in_rpcs = True
+            else:
+                if line.startswith('};'):
+                    in_rpcs = False
+                elif '{' in line and '"' in line:
+                    m = re.search('{ *("[^"]*"), *([0-9]+) *, *("[^"]*") *},', line)
+                    assert m, 'No match to table expression: %s' % line
+                    name = parse_string(m.group(1))
+                    idx = int(m.group(2))
+                    argname = parse_string(m.group(3))
+                    cmds.append((name, idx, argname))
+    assert not in_rpcs and cmds
+    return cmds
+
+def main():
+    root = sys.argv[1]
+
+    # Get all commands from dispatch tables
+    cmds = []
+    for fname in SOURCES:
+        cmds += process_commands(os.path.join(root, fname))
+
+    cmds_by_name = {}
+    for cmd in cmds:
+        cmds_by_name[cmd.name] = cmd
+
+    # Get current convert mapping for client
+    client = SOURCE_CLIENT
+    mapping = set(process_mapping(os.path.join(root, client)))
+
+    print('* Checking consistency between dispatch tables and vRPCConvertParams')
+
+    # Check mapping consistency
+    errors = 0
+    for (cmdname, argidx, argname) in mapping:
+        try:
+            rargnames = cmds_by_name[cmdname].args[argidx].names
+        except IndexError:
+            print('ERROR: %s argument %i (named %s in vRPCConvertParams) is not defined in dispatch table' % (cmdname, argidx, argname))
+            errors += 1
+            continue
+        if argname not in rargnames:
+            print('ERROR: %s argument %i is named %s in vRPCConvertParams but %s in dispatch table' % (cmdname, argidx, argname, rargnames), file=sys.stderr)
+            errors += 1
+
+    # Check for conflicts in vRPCConvertParams conversion
+    # All aliases for an argument must either be present in the
+    # conversion table, or not. Anything in between means an oversight
+    # and some aliases won't work.
+    for cmd in cmds:
+        for arg in cmd.args:
+            convert = [((cmd.name, arg.idx, argname) in mapping) for argname in arg.names]
+            if any(convert) != all(convert):
+                print('ERROR: %s argument %s has conflicts in vRPCConvertParams conversion specifier %s' % (cmd.name, arg.names, convert))
+                errors += 1
+            arg.convert = all(convert)
+
+    # Check for conversion difference by argument name.
+    # It is preferable for API consistency that arguments with the same name
+    # have the same conversion, so bin by argument name.
+    all_methods_by_argname = defaultdict(list)
+    converts_by_argname = defaultdict(list)
+    for cmd in cmds:
+        for arg in cmd.args:
+            for argname in arg.names:
+                all_methods_by_argname[argname].append(cmd.name)
+                converts_by_argname[argname].append(arg.convert)
+
+    for argname, convert in converts_by_argname.items():
+        if all(convert) != any(convert):
+            if argname in IGNORE_DUMMY_ARGS:
+                # these are testing or dummy, don't warn for them
+                continue
+            print('WARNING: conversion mismatch for argument named %s (%s)' %
+                  (argname, list(zip(all_methods_by_argname[argname], converts_by_argname[argname]))))
+
+    sys.exit(errors > 0)
+
+
+if __name__ == '__main__':
+    main()
--- a/contrib/devtools/clang-format-diff.py
+++ b/contrib/devtools/clang-format-diff.py
@@ -0,0 +1,164 @@
+#!/usr/bin/env python
+#
+#===- clang-format-diff.py - ClangFormat Diff Reformatter ----*- python -*--===#
+#
+#                     The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License.
+#
+#           ============================================================
+#
+# University of Illinois/NCSA
+# Open Source License
+#
+# Copyright (c) 2007-2015 University of Illinois at Urbana-Champaign.
+# All rights reserved.
+#
+# Developed by:
+#
+#     LLVM Team
+#
+#     University of Illinois at Urbana-Champaign
+#
+#     http://llvm.org
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy of
+# this software and associated documentation files (the "Software"), to deal with
+# the Software without restriction, including without limitation the rights to
+# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+# of the Software, and to permit persons to whom the Software is furnished to do
+# so, subject to the following conditions:
+#
+#     * Redistributions of source code must retain the above copyright notice,
+#       this list of conditions and the following disclaimers.
+#
+#     * Redistributions in binary form must reproduce the above copyright notice,
+#       this list of conditions and the following disclaimers in the
+#       documentation and/or other materials provided with the distribution.
+#
+#     * Neither the names of the LLVM Team, University of Illinois at
+#       Urbana-Champaign, nor the names of its contributors may be used to
+#       endorse or promote products derived from this Software without specific
+#       prior written permission.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+# FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+# CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE
+# SOFTWARE.
+#
+#           ============================================================
+#
+#===------------------------------------------------------------------------===#
+
+r"""
+ClangFormat Diff Reformatter
+============================
+
+This script reads input from a unified diff and reformats all the changed
+lines. This is useful to reformat all the lines touched by a specific patch.
+Example usage for git/svn users:
+
+  git diff -U0 HEAD^ | clang-format-diff.py -p1 -i
+  svn diff --diff-cmd=diff -x-U0 | clang-format-diff.py -i
+
+"""
+
+import argparse
+import difflib
+import re
+import string
+import subprocess
+import StringIO
+import sys
+
+
+# Change this to the full path if clang-format is not on the path.
+binary = 'clang-format'
+
+
+def main():
+  parser = argparse.ArgumentParser(description=
+                                   'Reformat changed lines in diff. Without -i '
+                                   'option just output the diff that would be '
+                                   'introduced.')
+  parser.add_argument('-i', action='store_true', default=False,
+                      help='apply edits to files instead of displaying a diff')
+  parser.add_argument('-p', metavar='NUM', default=0,
+                      help='strip the smallest prefix containing P slashes')
+  parser.add_argument('-regex', metavar='PATTERN', default=None,
+                      help='custom pattern selecting file paths to reformat '
+                      '(case sensitive, overrides -iregex)')
+  parser.add_argument('-iregex', metavar='PATTERN', default=
+                      r'.*\.(cpp|cc|c\+\+|cxx|c|cl|h|hpp|m|mm|inc|js|ts|proto'
+                      r'|protodevel|java)',
+                      help='custom pattern selecting file paths to reformat '
+                      '(case insensitive, overridden by -regex)')
+  parser.add_argument('-sort-includes', action='store_true', default=False,
+                      help='let clang-format sort include blocks')
+  parser.add_argument('-v', '--verbose', action='store_true',
+                      help='be more verbose, ineffective without -i')
+  args = parser.parse_args()
+
+  # Extract changed lines for each file.
+  filename = None
+  lines_by_file = {}
+  for line in sys.stdin:
+    match = re.search('^\+\+\+\ (.*?/){%s}(\S*)' % args.p, line)
+    if match:
+      filename = match.group(2)
+    if filename == None:
+      continue
+
+    if args.regex is not None:
+      if not re.match('^%s$' % args.regex, filename):
+        continue
+    else:
+      if not re.match('^%s$' % args.iregex, filename, re.IGNORECASE):
+        continue
+
+    match = re.search('^@@.*\+(\d+)(,(\d+))?', line)
+    if match:
+      start_line = int(match.group(1))
+      line_count = 1
+      if match.group(3):
+        line_count = int(match.group(3))
+      if line_count == 0:
+        continue
+      end_line = start_line + line_count - 1
+      lines_by_file.setdefault(filename, []).extend(
+          ['-lines', str(start_line) + ':' + str(end_line)])
+
+  # Reformat files containing changes in place.
+  for filename, lines in lines_by_file.iteritems():
+    if args.i and args.verbose:
+      print 'Formatting', filename
+    command = [binary, filename]
+    if args.i:
+      command.append('-i')
+    if args.sort_includes:
+      command.append('-sort-includes')
+    command.extend(lines)
+    command.extend(['-style=file', '-fallback-style=none'])
+    p = subprocess.Popen(command, stdout=subprocess.PIPE,
+                         stderr=None, stdin=subprocess.PIPE)
+    stdout, stderr = p.communicate()
+    if p.returncode != 0:
+      sys.exit(p.returncode)
+
+    if not args.i:
+      with open(filename) as f:
+        code = f.readlines()
+      formatted_code = StringIO.StringIO(stdout).readlines()
+      diff = difflib.unified_diff(code, formatted_code,
+                                  filename, filename,
+                                  '(before formatting)', '(after formatting)')
+      diff_string = string.join(diff, '')
+      if len(diff_string) > 0:
+        sys.stdout.write(diff_string)
+
+if __name__ == '__main__':
+  main()
--- a/contrib/devtools/clang-format.py
+++ b/contrib/devtools/clang-format.py
@@ -1,62 +0,0 @@
-#!/usr/bin/env python
-'''
-Wrapper script for clang-format
-
-Copyright (c) 2015 MarcoFalke
-Copyright (c) 2015 The Bitcoin Core developers
-Distributed under the MIT software license, see the accompanying
-file COPYING or http://www.opensource.org/licenses/mit-license.php.
-'''
-
-import os
-import sys
-import subprocess
-
-tested_versions = ['3.6.0', '3.6.1', '3.6.2'] # A set of versions known to produce the same output
-accepted_file_extensions = ('.h', '.cpp') # Files to format
-
-def check_clang_format_version(clang_format_exe):
-    try:
-        output = subprocess.check_output([clang_format_exe, '-version'])
-        for ver in tested_versions:
-            if ver in output:
-                print "Detected clang-format version " + ver
-                return
-        raise RuntimeError("Untested version: " + output)
-    except Exception as e:
-        print 'Could not verify version of ' + clang_format_exe + '.'
-        raise e
-
-def check_command_line_args(argv):
-    required_args = ['{clang-format-exe}', '{files}']
-    example_args = ['clang-format-3.x', 'src/main.cpp', 'src/wallet/*']
-
-    if(len(argv) < len(required_args) + 1):
-        for word in (['Usage:', argv[0]] + required_args):
-            print word,
-        print ''
-        for word in (['E.g:', argv[0]] + example_args):
-            print word,
-        print ''
-        sys.exit(1)
-
-def run_clang_format(clang_format_exe, files):
-    for target in files:
-        if os.path.isdir(target):
-            for path, dirs, files in os.walk(target):
-                run_clang_format(clang_format_exe, (os.path.join(path, f) for f in files))
-        elif target.endswith(accepted_file_extensions):
-            print "Format " + target
-            subprocess.check_call([clang_format_exe, '-i', '-style=file', target], stdout=open(os.devnull, 'wb'), stderr=subprocess.STDOUT)
-        else:
-            print "Skip " + target
-
-def main(argv):
-    check_command_line_args(argv)
-    clang_format_exe = argv[1]
-    files = argv[2:]
-    check_clang_format_version(clang_format_exe)
-    run_clang_format(clang_format_exe, files)
-
-if __name__ == "__main__":
-    main(sys.argv)
--- a/contrib/devtools/commit-script-check.sh
+++ b/contrib/devtools/commit-script-check.sh
@@ -0,0 +1,46 @@
+#!/bin/sh
+# Copyright (c) 2017 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+# This simple script checks for commits beginning with: scripted-diff:
+# If found, looks for a script between the lines -BEGIN VERIFY SCRIPT- and
+# -END VERIFY SCRIPT-. If no ending is found, it reads until the end of the
+# commit message.
+
+# The resulting script should exactly transform the previous commit into the current
+# one. Any remaining diff signals an error.
+
+if test "x$1" = "x"; then
+    echo "Usage: $0 <commit>..."
+    exit 1
+fi
+
+RET=0
+PREV_BRANCH=`git name-rev --name-only HEAD`
+PREV_HEAD=`git rev-parse HEAD`
+for i in `git rev-list --reverse $1`; do
+    if git rev-list -n 1 --pretty="%s" $i | grep -q "^scripted-diff:"; then
+        git checkout --quiet $i^ || exit
+        SCRIPT="`git rev-list --format=%b -n1 $i | sed '/^-BEGIN VERIFY SCRIPT-$/,/^-END VERIFY SCRIPT-$/{//!b};d'`"
+        if test "x$SCRIPT" = "x"; then
+            echo "Error: missing script for: $i"
+            echo "Failed"
+            RET=1
+        else
+            echo "Running script for: $i"
+            echo "$SCRIPT"
+            eval "$SCRIPT"
+            git --no-pager diff --exit-code $i && echo "OK" || (echo "Failed"; false) || RET=1
+        fi
+        git reset --quiet --hard HEAD
+     else
+        if git rev-list "--format=%b" -n1 $i | grep -q '^-\(BEGIN\|END\)[ a-zA-Z]*-$'; then
+            echo "Error: script block marker but no scripted-diff in title"
+            echo "Failed"
+            RET=1
+        fi
+    fi
+done
+git checkout --quiet $PREV_BRANCH 2>/dev/null || git checkout --quiet $PREV_HEAD
+exit $RET
--- a/contrib/devtools/copyright_header.py
+++ b/contrib/devtools/copyright_header.py
@@ -0,0 +1,612 @@
+#!/usr/bin/env python3
+# Copyright (c) 2016-2017 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+import re
+import fnmatch
+import sys
+import subprocess
+import datetime
+import os
+
+################################################################################
+# file filtering
+################################################################################
+
+EXCLUDE = [
+    # libsecp256k1:
+    'src/secp256k1/include/secp256k1.h',
+    'src/secp256k1/include/secp256k1_ecdh.h',
+    'src/secp256k1/include/secp256k1_recovery.h',
+    'src/secp256k1/include/secp256k1_schnorr.h',
+    'src/secp256k1/src/java/org_bitcoin_NativeSecp256k1.c',
+    'src/secp256k1/src/java/org_bitcoin_NativeSecp256k1.h',
+    'src/secp256k1/src/java/org_bitcoin_Secp256k1Context.c',
+    'src/secp256k1/src/java/org_bitcoin_Secp256k1Context.h',
+    # univalue:
+    'src/univalue/test/object.cpp',
+    'src/univalue/lib/univalue_escapes.h',
+    # auto generated:
+    'src/qt/bitcoinstrings.cpp',
+    'src/chainparamsseeds.h',
+    # other external copyrights:
+    'src/tinyformat.h',
+    'src/leveldb/util/env_win.cc',
+    'src/crypto/ctaes/bench.c',
+    'test/functional/test_framework/bignum.py',
+    # python init:
+    '*__init__.py',
+]
+EXCLUDE_COMPILED = re.compile('|'.join([fnmatch.translate(m) for m in EXCLUDE]))
+
+INCLUDE = ['*.h', '*.cpp', '*.cc', '*.c', '*.py']
+INCLUDE_COMPILED = re.compile('|'.join([fnmatch.translate(m) for m in INCLUDE]))
+
+def applies_to_file(filename):
+    return ((EXCLUDE_COMPILED.match(filename) is None) and
+            (INCLUDE_COMPILED.match(filename) is not None))
+
+################################################################################
+# obtain list of files in repo according to INCLUDE and EXCLUDE
+################################################################################
+
+GIT_LS_CMD = 'git ls-files'
+
+def call_git_ls():
+    out = subprocess.check_output(GIT_LS_CMD.split(' '))
+    return [f for f in out.decode("utf-8").split('\n') if f != '']
+
+def get_filenames_to_examine():
+    filenames = call_git_ls()
+    return sorted([filename for filename in filenames if
+                   applies_to_file(filename)])
+
+################################################################################
+# define and compile regexes for the patterns we are looking for
+################################################################################
+
+
+COPYRIGHT_WITH_C = 'Copyright \(c\)'
+COPYRIGHT_WITHOUT_C = 'Copyright'
+ANY_COPYRIGHT_STYLE = '(%s|%s)' % (COPYRIGHT_WITH_C, COPYRIGHT_WITHOUT_C)
+
+YEAR = "20[0-9][0-9]"
+YEAR_RANGE = '(%s)(-%s)?' % (YEAR, YEAR)
+YEAR_LIST = '(%s)(, %s)+' % (YEAR, YEAR)
+ANY_YEAR_STYLE = '(%s|%s)' % (YEAR_RANGE, YEAR_LIST)
+ANY_COPYRIGHT_STYLE_OR_YEAR_STYLE = ("%s %s" % (ANY_COPYRIGHT_STYLE,
+                                                ANY_YEAR_STYLE))
+
+ANY_COPYRIGHT_COMPILED = re.compile(ANY_COPYRIGHT_STYLE_OR_YEAR_STYLE)
+
+def compile_copyright_regex(copyright_style, year_style, name):
+    return re.compile('%s %s %s' % (copyright_style, year_style, name))
+
+EXPECTED_HOLDER_NAMES = [
+    "Satoshi Nakamoto\n",
+    "The Bitcoin Core developers\n",
+    "The Bitcoin Core developers \n",
+    "Bitcoin Core Developers\n",
+    "the Bitcoin Core developers\n",
+    "The Bitcoin developers\n",
+    "The LevelDB Authors\. All rights reserved\.\n",
+    "BitPay Inc\.\n",
+    "BitPay, Inc\.\n",
+    "University of Illinois at Urbana-Champaign\.\n",
+    "MarcoFalke\n",
+    "Pieter Wuille\n",
+    "Pieter Wuille +\*\n",
+    "Pieter Wuille, Gregory Maxwell +\*\n",
+    "Pieter Wuille, Andrew Poelstra +\*\n",
+    "Andrew Poelstra +\*\n",
+    "Wladimir J. van der Laan\n",
+    "Jeff Garzik\n",
+    "Diederik Huys, Pieter Wuille +\*\n",
+    "Thomas Daede, Cory Fields +\*\n",
+    "Jan-Klaas Kollhof\n",
+    "Sam Rushing\n",
+    "ArtForz -- public domain half-a-node\n",
+]
+
+DOMINANT_STYLE_COMPILED = {}
+YEAR_LIST_STYLE_COMPILED = {}
+WITHOUT_C_STYLE_COMPILED = {}
+
+for holder_name in EXPECTED_HOLDER_NAMES:
+    DOMINANT_STYLE_COMPILED[holder_name] = (
+        compile_copyright_regex(COPYRIGHT_WITH_C, YEAR_RANGE, holder_name))
+    YEAR_LIST_STYLE_COMPILED[holder_name] = (
+        compile_copyright_regex(COPYRIGHT_WITH_C, YEAR_LIST, holder_name))
+    WITHOUT_C_STYLE_COMPILED[holder_name] = (
+        compile_copyright_regex(COPYRIGHT_WITHOUT_C, ANY_YEAR_STYLE,
+                                holder_name))
+
+################################################################################
+# search file contents for copyright message of particular category
+################################################################################
+
+def get_count_of_copyrights_of_any_style_any_holder(contents):
+    return len(ANY_COPYRIGHT_COMPILED.findall(contents))
+
+def file_has_dominant_style_copyright_for_holder(contents, holder_name):
+    match = DOMINANT_STYLE_COMPILED[holder_name].search(contents)
+    return match is not None
+
+def file_has_year_list_style_copyright_for_holder(contents, holder_name):
+    match = YEAR_LIST_STYLE_COMPILED[holder_name].search(contents)
+    return match is not None
+
+def file_has_without_c_style_copyright_for_holder(contents, holder_name):
+    match = WITHOUT_C_STYLE_COMPILED[holder_name].search(contents)
+    return match is not None
+
+################################################################################
+# get file info
+################################################################################
+
+def read_file(filename):
+    return open(os.path.abspath(filename), 'r').read()
+
+def gather_file_info(filename):
+    info = {}
+    info['filename'] = filename
+    c = read_file(filename)
+    info['contents'] = c
+
+    info['all_copyrights'] = get_count_of_copyrights_of_any_style_any_holder(c)
+
+    info['classified_copyrights'] = 0
+    info['dominant_style'] = {}
+    info['year_list_style'] = {}
+    info['without_c_style'] = {}
+    for holder_name in EXPECTED_HOLDER_NAMES:
+        has_dominant_style = (
+            file_has_dominant_style_copyright_for_holder(c, holder_name))
+        has_year_list_style = (
+            file_has_year_list_style_copyright_for_holder(c, holder_name))
+        has_without_c_style = (
+            file_has_without_c_style_copyright_for_holder(c, holder_name))
+        info['dominant_style'][holder_name] = has_dominant_style
+        info['year_list_style'][holder_name] = has_year_list_style
+        info['without_c_style'][holder_name] = has_without_c_style
+        if has_dominant_style or has_year_list_style or has_without_c_style:
+            info['classified_copyrights'] = info['classified_copyrights'] + 1
+    return info
+
+################################################################################
+# report execution
+################################################################################
+
+SEPARATOR = '-'.join(['' for _ in range(80)])
+
+def print_filenames(filenames, verbose):
+    if not verbose:
+        return
+    for filename in filenames:
+        print("\t%s" % filename)
+
+def print_report(file_infos, verbose):
+    print(SEPARATOR)
+    examined = [i['filename'] for i in file_infos]
+    print("%d files examined according to INCLUDE and EXCLUDE fnmatch rules" %
+          len(examined))
+    print_filenames(examined, verbose)
+
+    print(SEPARATOR)
+    print('')
+    zero_copyrights = [i['filename'] for i in file_infos if
+                       i['all_copyrights'] == 0]
+    print("%4d with zero copyrights" % len(zero_copyrights))
+    print_filenames(zero_copyrights, verbose)
+    one_copyright = [i['filename'] for i in file_infos if
+                     i['all_copyrights'] == 1]
+    print("%4d with one copyright" % len(one_copyright))
+    print_filenames(one_copyright, verbose)
+    two_copyrights = [i['filename'] for i in file_infos if
+                      i['all_copyrights'] == 2]
+    print("%4d with two copyrights" % len(two_copyrights))
+    print_filenames(two_copyrights, verbose)
+    three_copyrights = [i['filename'] for i in file_infos if
+                        i['all_copyrights'] == 3]
+    print("%4d with three copyrights" % len(three_copyrights))
+    print_filenames(three_copyrights, verbose)
+    four_or_more_copyrights = [i['filename'] for i in file_infos if
+                               i['all_copyrights'] >= 4]
+    print("%4d with four or more copyrights" % len(four_or_more_copyrights))
+    print_filenames(four_or_more_copyrights, verbose)
+    print('')
+    print(SEPARATOR)
+    print('Copyrights with dominant style:\ne.g. "Copyright (c)" and '
+          '"<year>" or "<startYear>-<endYear>":\n')
+    for holder_name in EXPECTED_HOLDER_NAMES:
+        dominant_style = [i['filename'] for i in file_infos if
+                          i['dominant_style'][holder_name]]
+        if len(dominant_style) > 0:
+            print("%4d with '%s'" % (len(dominant_style),
+                                     holder_name.replace('\n', '\\n')))
+            print_filenames(dominant_style, verbose)
+    print('')
+    print(SEPARATOR)
+    print('Copyrights with year list style:\ne.g. "Copyright (c)" and '
+          '"<year1>, <year2>, ...":\n')
+    for holder_name in EXPECTED_HOLDER_NAMES:
+        year_list_style = [i['filename'] for i in file_infos if
+                           i['year_list_style'][holder_name]]
+        if len(year_list_style) > 0:
+            print("%4d with '%s'" % (len(year_list_style),
+                                     holder_name.replace('\n', '\\n')))
+            print_filenames(year_list_style, verbose)
+    print('')
+    print(SEPARATOR)
+    print('Copyrights with no "(c)" style:\ne.g. "Copyright" and "<year>" or '
+          '"<startYear>-<endYear>":\n')
+    for holder_name in EXPECTED_HOLDER_NAMES:
+        without_c_style = [i['filename'] for i in file_infos if
+                           i['without_c_style'][holder_name]]
+        if len(without_c_style) > 0:
+            print("%4d with '%s'" % (len(without_c_style),
+                                     holder_name.replace('\n', '\\n')))
+            print_filenames(without_c_style, verbose)
+
+    print('')
+    print(SEPARATOR)
+
+    unclassified_copyrights = [i['filename'] for i in file_infos if
+                               i['classified_copyrights'] < i['all_copyrights']]
+    print("%d with unexpected copyright holder names" %
+          len(unclassified_copyrights))
+    print_filenames(unclassified_copyrights, verbose)
+    print(SEPARATOR)
+
+def exec_report(base_directory, verbose):
+    original_cwd = os.getcwd()
+    os.chdir(base_directory)
+    filenames = get_filenames_to_examine()
+    file_infos = [gather_file_info(f) for f in filenames]
+    print_report(file_infos, verbose)
+    os.chdir(original_cwd)
+
+################################################################################
+# report cmd
+################################################################################
+
+REPORT_USAGE = """
+Produces a report of all copyright header notices found inside the source files
+of a repository.
+
+Usage:
+    $ ./copyright_header.py report <base_directory> [verbose]
+
+Arguments:
+    <base_directory> - The base directory of a bitcoin source code repository.
+    [verbose] - Includes a list of every file of each subcategory in the report.
+"""
+
+def report_cmd(argv):
+    if len(argv) == 2:
+        sys.exit(REPORT_USAGE)
+        
+    base_directory = argv[2]
+    if not os.path.exists(base_directory):
+        sys.exit("*** bad <base_directory>: %s" % base_directory)
+
+    if len(argv) == 3:
+        verbose = False
+    elif argv[3] == 'verbose':
+        verbose = True
+    else:
+        sys.exit("*** unknown argument: %s" % argv[2])
+
+    exec_report(base_directory, verbose)
+
+################################################################################
+# query git for year of last change
+################################################################################
+
+GIT_LOG_CMD = "git log --pretty=format:%%ai %s"
+
+def call_git_log(filename):
+    out = subprocess.check_output((GIT_LOG_CMD % filename).split(' '))
+    return out.decode("utf-8").split('\n')
+
+def get_git_change_years(filename):
+    git_log_lines = call_git_log(filename)
+    if len(git_log_lines) == 0:
+        return [datetime.date.today().year]
+    # timestamp is in ISO 8601 format. e.g. "2016-09-05 14:25:32 -0600"
+    return [line.split(' ')[0].split('-')[0] for line in git_log_lines]
+
+def get_most_recent_git_change_year(filename):
+    return max(get_git_change_years(filename))
+
+################################################################################
+# read and write to file
+################################################################################
+
+def read_file_lines(filename):
+    f = open(os.path.abspath(filename), 'r')
+    file_lines = f.readlines()
+    f.close()
+    return file_lines
+
+def write_file_lines(filename, file_lines):
+    f = open(os.path.abspath(filename), 'w')
+    f.write(''.join(file_lines))
+    f.close()
+
+################################################################################
+# update header years execution
+################################################################################
+
+COPYRIGHT = 'Copyright \(c\)'
+YEAR = "20[0-9][0-9]"
+YEAR_RANGE = '(%s)(-%s)?' % (YEAR, YEAR)
+HOLDER = 'The Bitcoin Core developers'
+UPDATEABLE_LINE_COMPILED = re.compile(' '.join([COPYRIGHT, YEAR_RANGE, HOLDER]))
+
+def get_updatable_copyright_line(file_lines):
+    index = 0
+    for line in file_lines:
+        if UPDATEABLE_LINE_COMPILED.search(line) is not None:
+            return index, line
+        index = index + 1
+    return None, None
+
+def parse_year_range(year_range):
+    year_split = year_range.split('-')
+    start_year = year_split[0]
+    if len(year_split) == 1:
+        return start_year, start_year
+    return start_year, year_split[1]
+
+def year_range_to_str(start_year, end_year):
+    if start_year == end_year:
+        return start_year
+    return "%s-%s" % (start_year, end_year)
+
+def create_updated_copyright_line(line, last_git_change_year):
+    copyright_splitter = 'Copyright (c) '
+    copyright_split = line.split(copyright_splitter)
+    # Preserve characters on line that are ahead of the start of the copyright
+    # notice - they are part of the comment block and vary from file-to-file.
+    before_copyright = copyright_split[0]
+    after_copyright = copyright_split[1]
+
+    space_split = after_copyright.split(' ')
+    year_range = space_split[0]
+    start_year, end_year = parse_year_range(year_range)
+    if end_year == last_git_change_year:
+        return line
+    return (before_copyright + copyright_splitter +
+            year_range_to_str(start_year, last_git_change_year) + ' ' +
+            ' '.join(space_split[1:]))
+
+def update_updatable_copyright(filename):
+    file_lines = read_file_lines(filename)
+    index, line = get_updatable_copyright_line(file_lines)
+    if not line:
+        print_file_action_message(filename, "No updatable copyright.")
+        return
+    last_git_change_year = get_most_recent_git_change_year(filename)
+    new_line = create_updated_copyright_line(line, last_git_change_year)
+    if line == new_line:
+        print_file_action_message(filename, "Copyright up-to-date.")
+        return
+    file_lines[index] = new_line
+    write_file_lines(filename, file_lines)
+    print_file_action_message(filename,
+                              "Copyright updated! -> %s" % last_git_change_year)
+
+def exec_update_header_year(base_directory):
+    original_cwd = os.getcwd()
+    os.chdir(base_directory)
+    for filename in get_filenames_to_examine():
+        update_updatable_copyright(filename)
+    os.chdir(original_cwd)
+
+################################################################################
+# update cmd
+################################################################################
+
+UPDATE_USAGE = """
+Updates all the copyright headers of "The Bitcoin Core developers" which were
+changed in a year more recent than is listed. For example:
+
+// Copyright (c) <firstYear>-<lastYear> The Bitcoin Core developers
+
+will be updated to:
+
+// Copyright (c) <firstYear>-<lastModifiedYear> The Bitcoin Core developers
+
+where <lastModifiedYear> is obtained from the 'git log' history.
+
+This subcommand also handles copyright headers that have only a single year. In those cases:
+
+// Copyright (c) <year> The Bitcoin Core developers
+
+will be updated to:
+
+// Copyright (c) <year>-<lastModifiedYear> The Bitcoin Core developers
+
+where the update is appropriate.
+
+Usage:
+    $ ./copyright_header.py update <base_directory>
+
+Arguments:
+    <base_directory> - The base directory of a bitcoin source code repository.
+"""
+
+def print_file_action_message(filename, action):
+    print("%-52s %s" % (filename, action))
+
+def update_cmd(argv):
+    if len(argv) != 3:
+        sys.exit(UPDATE_USAGE)
+    
+    base_directory = argv[2]
+    if not os.path.exists(base_directory):
+        sys.exit("*** bad base_directory: %s" % base_directory)
+    exec_update_header_year(base_directory)
+
+################################################################################
+# inserted copyright header format
+################################################################################
+
+def get_header_lines(header, start_year, end_year):
+    lines = header.split('\n')[1:-1]
+    lines[0] = lines[0] % year_range_to_str(start_year, end_year)
+    return [line + '\n' for line in lines]
+
+CPP_HEADER = '''
+// Copyright (c) %s The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+'''
+
+def get_cpp_header_lines_to_insert(start_year, end_year):
+    return reversed(get_header_lines(CPP_HEADER, start_year, end_year))
+
+PYTHON_HEADER = '''
+# Copyright (c) %s The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+'''
+
+def get_python_header_lines_to_insert(start_year, end_year):
+    return reversed(get_header_lines(PYTHON_HEADER, start_year, end_year))
+
+################################################################################
+# query git for year of last change
+################################################################################
+
+def get_git_change_year_range(filename):
+    years = get_git_change_years(filename)
+    return min(years), max(years)
+
+################################################################################
+# check for existing core copyright
+################################################################################
+
+def file_already_has_core_copyright(file_lines):
+    index, _ = get_updatable_copyright_line(file_lines)
+    return index != None
+
+################################################################################
+# insert header execution
+################################################################################
+
+def file_has_hashbang(file_lines):
+    if len(file_lines) < 1:
+        return False
+    if len(file_lines[0]) <= 2:
+        return False
+    return file_lines[0][:2] == '#!'
+
+def insert_python_header(filename, file_lines, start_year, end_year):
+    if file_has_hashbang(file_lines):
+        insert_idx = 1 
+    else:
+        insert_idx = 0
+    header_lines = get_python_header_lines_to_insert(start_year, end_year)
+    for line in header_lines:
+        file_lines.insert(insert_idx, line)
+    write_file_lines(filename, file_lines)
+
+def insert_cpp_header(filename, file_lines, start_year, end_year):
+    header_lines = get_cpp_header_lines_to_insert(start_year, end_year)
+    for line in header_lines:
+        file_lines.insert(0, line)
+    write_file_lines(filename, file_lines)
+
+def exec_insert_header(filename, style):
+    file_lines = read_file_lines(filename)
+    if file_already_has_core_copyright(file_lines):
+        sys.exit('*** %s already has a copyright by The Bitcoin Core developers'
+                 % (filename))
+    start_year, end_year = get_git_change_year_range(filename)
+    if style == 'python':
+        insert_python_header(filename, file_lines, start_year, end_year)
+    else:
+        insert_cpp_header(filename, file_lines, start_year, end_year)
+
+################################################################################
+# insert cmd
+################################################################################
+
+INSERT_USAGE = """
+Inserts a copyright header for "The Bitcoin Core developers" at the top of the
+file in either Python or C++ style as determined by the file extension. If the
+file is a Python file and it has a '#!' starting the first line, the header is
+inserted in the line below it.
+
+The copyright dates will be set to be:
+
+"<year_introduced>-<current_year>"
+
+where <year_introduced> is according to the 'git log' history. If
+<year_introduced> is equal to <current_year>, the date will be set to be:
+
+"<current_year>"
+
+If the file already has a copyright for "The Bitcoin Core developers", the
+script will exit.
+
+Usage:
+    $ ./copyright_header.py insert <file>
+
+Arguments:
+    <file> - A source file in the bitcoin repository.
+"""
+
+def insert_cmd(argv):
+    if len(argv) != 3:
+        sys.exit(INSERT_USAGE)
+
+    filename = argv[2]
+    if not os.path.isfile(filename):
+        sys.exit("*** bad filename: %s" % filename)
+    _, extension = os.path.splitext(filename)
+    if extension not in ['.h', '.cpp', '.cc', '.c', '.py']:
+        sys.exit("*** cannot insert for file extension %s" % extension)
+   
+    if extension == '.py': 
+        style = 'python'
+    else:
+        style = 'cpp'
+    exec_insert_header(filename, style)
+         
+################################################################################
+# UI
+################################################################################
+
+USAGE = """
+copyright_header.py - utilities for managing copyright headers of 'The Bitcoin
+Core developers' in repository source files.
+
+Usage:
+    $ ./copyright_header <subcommand>
+
+Subcommands:
+    report
+    update
+    insert
+
+To see subcommand usage, run them without arguments.
+"""
+
+SUBCOMMANDS = ['report', 'update', 'insert']
+
+if __name__ == "__main__":
+    if len(sys.argv) == 1:
+        sys.exit(USAGE)
+    subcommand = sys.argv[1]
+    if subcommand not in SUBCOMMANDS:
+        sys.exit(USAGE)
+    if subcommand == 'report':
+        report_cmd(sys.argv)
+    elif subcommand == 'update':
+        update_cmd(sys.argv)
+    elif subcommand == 'insert':
+        insert_cmd(sys.argv)
--- a/contrib/devtools/fix-copyright-headers.py
+++ b/contrib/devtools/fix-copyright-headers.py
@@ -1,53 +0,0 @@
-#!/usr/bin/env python
-'''
-Run this script inside of src/ and it will look for all the files
-that were changed this year that still have the last year in the
-copyright headers, and it will fix the headers on that file using
-a perl regex one liner.
-
-For example: if it finds something like this and we're in 2014
-
-// Copyright (c) 2009-2013 The Bitcoin Core developers
-
-it will change it to
-
-// Copyright (c) 2009-2014 The Bitcoin Core developers
-
-It will do this for all the files in the folder and its children.
-
-Author: @gubatron
-'''
-import os
-import time
-
-year = time.gmtime()[0]
-last_year = year - 1
-command = "perl -pi -e 's/%s The Bitcoin/%s The Bitcoin/' %s"
-listFilesCommand = "find . | grep %s"
-
-extensions = [".cpp",".h"]
-
-def getLastGitModifiedDate(filePath):
-  gitGetLastCommitDateCommand = "git log " + filePath +" | grep Date | head -n 1"
-  p = os.popen(gitGetLastCommitDateCommand)
-  result = ""
-  for l in p:
-    result = l
-    break
-  result = result.replace("\n","")
-  return result
-
-n=1
-for extension in extensions:
-  foundFiles = os.popen(listFilesCommand % extension)
-  for filePath in foundFiles:
-    filePath = filePath[1:-1]
-    if filePath.endswith(extension):
-      filePath = os.getcwd() + filePath
-      modifiedTime = getLastGitModifiedDate(filePath)
-      if len(modifiedTime) > 0 and str(year) in modifiedTime:
-        print n,"Last Git Modified: ", modifiedTime, " - ", filePath
-        os.popen(command % (last_year,year,filePath))
-        n = n + 1
-
-
--- a/contrib/devtools/gen-manpages.sh
+++ b/contrib/devtools/gen-manpages.sh
@@ -0,0 +1,29 @@
+#!/bin/bash
+
+TOPDIR=${TOPDIR:-$(git rev-parse --show-toplevel)}
+SRCDIR=${SRCDIR:-$TOPDIR/src}
+MANDIR=${MANDIR:-$TOPDIR/doc/man}
+
+BITCOIND=${BITCOIND:-$SRCDIR/bitcoind}
+BITCOINCLI=${BITCOINCLI:-$SRCDIR/bitcoin-cli}
+BITCOINTX=${BITCOINTX:-$SRCDIR/bitcoin-tx}
+BITCOINQT=${BITCOINQT:-$SRCDIR/qt/bitcoin-qt}
+
+[ ! -x $BITCOIND ] && echo "$BITCOIND not found or not executable." && exit 1
+
+# The autodetected version git tag can screw up manpage output a little bit
+BTCVER=($($BITCOINCLI --version | head -n1 | awk -F'[ -]' '{ print $6, $7 }'))
+
+# Create a footer file with copyright content.
+# This gets autodetected fine for bitcoind if --version-string is not set,
+# but has different outcomes for bitcoin-qt and bitcoin-cli.
+echo "[COPYRIGHT]" > footer.h2m
+$BITCOIND --version | sed -n '1!p' >> footer.h2m
+
+for cmd in $BITCOIND $BITCOINCLI $BITCOINTX $BITCOINQT; do
+  cmdname="${cmd##*/}"
+  help2man -N --version-string=${BTCVER[0]} --include=footer.h2m -o ${MANDIR}/${cmdname}.1 ${cmd}
+  sed -i "s/\\\-${BTCVER[1]}//g" ${MANDIR}/${cmdname}.1
+done
+
+rm -f footer.h2m
--- a/contrib/devtools/git-subtree-check.sh
+++ b/contrib/devtools/git-subtree-check.sh
@@ -1,4 +1,7 @@
 #!/bin/sh
+# Copyright (c) 2015 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.

 DIR="$1"
 COMMIT="$2"
@@ -15,7 +18,7 @@ find_latest_squash()
 	sub=
 	git log --grep="^git-subtree-dir: $dir/*\$" \
 		--pretty=format:'START %H%n%s%n%n%b%nEND%n' "$COMMIT" |
-	while read a b junk; do
+	while read a b _; do
 		case "$a" in
 			START) sq="$b" ;;
 			git-subtree-mainline:) main="$b" ;;
@@ -38,21 +41,17 @@ find_latest_squash()
 	done
 }

+# find latest subtree update
 latest_squash="$(find_latest_squash "$DIR")"
 if [ -z "$latest_squash" ]; then
    echo "ERROR: $DIR is not a subtree" >&2
    exit 2
 fi
-
 set $latest_squash
 old=$1
 rev=$2
-if [ "d$(git cat-file -t $rev 2>/dev/null)" != dcommit ]; then
-    echo "ERROR: subtree commit $rev unavailable. Fetch/update the subtree repository" >&2
-    exit 2
-fi
-tree_subtree=$(git show -s --format="%T" $rev)
-echo "$DIR in $COMMIT was last updated to upstream commit $rev (tree $tree_subtree)"
+
+# get the tree in the current commit
 tree_actual=$(git ls-tree -d "$COMMIT" "$DIR" | head -n 1)
 if [ -z "$tree_actual" ]; then
    echo "FAIL: subtree directory $DIR not found in $COMMIT" >&2
@@ -66,9 +65,30 @@ if [ "d$tree_actual_type" != "dtree" ]; then
    echo "FAIL: subtree directory $DIR is not a tree in $COMMIT" >&2
    exit 1
 fi
-if [ "$tree_actual_tree" != "$tree_subtree" ]; then
-    git diff-tree $tree_actual_tree $tree_subtree >&2
-    echo "FAIL: subtree directory tree doesn't match subtree commit tree" >&2
+
+# get the tree at the time of the last subtree update
+tree_commit=$(git show -s --format="%T" $old)
+echo "$DIR in $COMMIT was last updated in commit $old (tree $tree_commit)"
+
+# ... and compare the actual tree with it
+if [ "$tree_actual_tree" != "$tree_commit" ]; then
+    git diff $tree_commit $tree_actual_tree >&2
+    echo "FAIL: subtree directory was touched without subtree merge" >&2
    exit 1
 fi
+
+# get the tree in the subtree commit referred to
+if [ "d$(git cat-file -t $rev 2>/dev/null)" != dcommit ]; then
+    echo "subtree commit $rev unavailable: cannot compare" >&2
+    exit
+fi
+tree_subtree=$(git show -s --format="%T" $rev)
+echo "$DIR in $COMMIT was last updated to upstream commit $rev (tree $tree_subtree)"
+
+# ... and compare the actual tree with it
+if [ "$tree_actual_tree" != "$tree_subtree" ]; then
+    echo "FAIL: subtree update commit differs from upstream tree!" >&2
+    exit 1
+fi
+
 echo "GOOD"
--- a/contrib/devtools/github-merge.py
+++ b/contrib/devtools/github-merge.py
@@ -0,0 +1,330 @@
+#!/usr/bin/env python3
+# Copyright (c) 2016-2017 Bitcoin Core Developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+# This script will locally construct a merge commit for a pull request on a
+# github repository, inspect it, sign it and optionally push it.
+
+# The following temporary branches are created/overwritten and deleted:
+# * pull/$PULL/base (the current master we're merging onto)
+# * pull/$PULL/head (the current state of the remote pull request)
+# * pull/$PULL/merge (github's merge)
+# * pull/$PULL/local-merge (our merge)
+
+# In case of a clean merge that is accepted by the user, the local branch with
+# name $BRANCH is overwritten with the merged result, and optionally pushed.
+from __future__ import division,print_function,unicode_literals
+import os
+from sys import stdin,stdout,stderr
+import argparse
+import hashlib
+import subprocess
+import sys
+import json,codecs
+try:
+    from urllib.request import Request,urlopen
+except:
+    from urllib2 import Request,urlopen
+
+# External tools (can be overridden using environment)
+GIT = os.getenv('GIT','git')
+BASH = os.getenv('BASH','bash')
+
+# OS specific configuration for terminal attributes
+ATTR_RESET = ''
+ATTR_PR = ''
+COMMIT_FORMAT = '%h %s (%an)%d'
+if os.name == 'posix': # if posix, assume we can use basic terminal escapes
+    ATTR_RESET = '\033[0m'
+    ATTR_PR = '\033[1;36m'
+    COMMIT_FORMAT = '%C(bold blue)%h%Creset %s %C(cyan)(%an)%Creset%C(green)%d%Creset'
+
+def git_config_get(option, default=None):
+    '''
+    Get named configuration option from git repository.
+    '''
+    try:
+        return subprocess.check_output([GIT,'config','--get',option]).rstrip().decode('utf-8')
+    except subprocess.CalledProcessError as e:
+        return default
+
+def retrieve_pr_info(repo,pull):
+    '''
+    Retrieve pull request information from github.
+    Return None if no title can be found, or an error happens.
+    '''
+    try:
+        req = Request("https://api.github.com/repos/"+repo+"/pulls/"+pull)
+        result = urlopen(req)
+        reader = codecs.getreader('utf-8')
+        obj = json.load(reader(result))
+        return obj
+    except Exception as e:
+        print('Warning: unable to retrieve pull information from github: %s' % e)
+        return None
+
+def ask_prompt(text):
+    print(text,end=" ",file=stderr)
+    stderr.flush()
+    reply = stdin.readline().rstrip()
+    print("",file=stderr)
+    return reply
+
+def get_symlink_files():
+    files = sorted(subprocess.check_output([GIT, 'ls-tree', '--full-tree', '-r', 'HEAD']).splitlines())
+    ret = []
+    for f in files:
+        if (int(f.decode('utf-8').split(" ")[0], 8) & 0o170000) == 0o120000:
+            ret.append(f.decode('utf-8').split("\t")[1])
+    return ret
+
+def tree_sha512sum(commit='HEAD'):
+    # request metadata for entire tree, recursively
+    files = []
+    blob_by_name = {}
+    for line in subprocess.check_output([GIT, 'ls-tree', '--full-tree', '-r', commit]).splitlines():
+        name_sep = line.index(b'\t')
+        metadata = line[:name_sep].split() # perms, 'blob', blobid
+        assert(metadata[1] == b'blob')
+        name = line[name_sep+1:]
+        files.append(name)
+        blob_by_name[name] = metadata[2]
+
+    files.sort()
+    # open connection to git-cat-file in batch mode to request data for all blobs
+    # this is much faster than launching it per file
+    p = subprocess.Popen([GIT, 'cat-file', '--batch'], stdout=subprocess.PIPE, stdin=subprocess.PIPE)
+    overall = hashlib.sha512()
+    for f in files:
+        blob = blob_by_name[f]
+        # request blob
+        p.stdin.write(blob + b'\n')
+        p.stdin.flush()
+        # read header: blob, "blob", size
+        reply = p.stdout.readline().split()
+        assert(reply[0] == blob and reply[1] == b'blob')
+        size = int(reply[2])
+        # hash the blob data
+        intern = hashlib.sha512()
+        ptr = 0
+        while ptr < size:
+            bs = min(65536, size - ptr)
+            piece = p.stdout.read(bs)
+            if len(piece) == bs:
+                intern.update(piece)
+            else:
+                raise IOError('Premature EOF reading git cat-file output')
+            ptr += bs
+        dig = intern.hexdigest()
+        assert(p.stdout.read(1) == b'\n') # ignore LF that follows blob data
+        # update overall hash with file hash
+        overall.update(dig.encode("utf-8"))
+        overall.update("  ".encode("utf-8"))
+        overall.update(f)
+        overall.update("\n".encode("utf-8"))
+    p.stdin.close()
+    if p.wait():
+        raise IOError('Non-zero return value executing git cat-file')
+    return overall.hexdigest()
+
+def print_merge_details(pull, title, branch, base_branch, head_branch):
+    print('%s#%s%s %s %sinto %s%s' % (ATTR_RESET+ATTR_PR,pull,ATTR_RESET,title,ATTR_RESET+ATTR_PR,branch,ATTR_RESET))
+    subprocess.check_call([GIT,'log','--graph','--topo-order','--pretty=format:'+COMMIT_FORMAT,base_branch+'..'+head_branch])
+
+def parse_arguments():
+    epilog = '''
+        In addition, you can set the following git configuration variables:
+        githubmerge.repository (mandatory),
+        user.signingkey (mandatory),
+        githubmerge.host (default: git@github.com),
+        githubmerge.branch (no default),
+        githubmerge.testcmd (default: none).
+    '''
+    parser = argparse.ArgumentParser(description='Utility to merge, sign and push github pull requests',
+            epilog=epilog)
+    parser.add_argument('pull', metavar='PULL', type=int, nargs=1,
+        help='Pull request ID to merge')
+    parser.add_argument('branch', metavar='BRANCH', type=str, nargs='?',
+        default=None, help='Branch to merge against (default: githubmerge.branch setting, or base branch for pull, or \'master\')')
+    return parser.parse_args()
+
+def main():
+    # Extract settings from git repo
+    repo = git_config_get('githubmerge.repository')
+    host = git_config_get('githubmerge.host','git@github.com')
+    opt_branch = git_config_get('githubmerge.branch',None)
+    testcmd = git_config_get('githubmerge.testcmd')
+    signingkey = git_config_get('user.signingkey')
+    if repo is None:
+        print("ERROR: No repository configured. Use this command to set:", file=stderr)
+        print("git config githubmerge.repository <owner>/<repo>", file=stderr)
+        sys.exit(1)
+    if signingkey is None:
+        print("ERROR: No GPG signing key set. Set one using:",file=stderr)
+        print("git config --global user.signingkey <key>",file=stderr)
+        sys.exit(1)
+
+    host_repo = host+":"+repo # shortcut for push/pull target
+
+    # Extract settings from command line
+    args = parse_arguments()
+    pull = str(args.pull[0])
+
+    # Receive pull information from github
+    info = retrieve_pr_info(repo,pull)
+    if info is None:
+        sys.exit(1)
+    title = info['title'].strip()
+    body = info['body'].strip()
+    # precedence order for destination branch argument:
+    #   - command line argument
+    #   - githubmerge.branch setting
+    #   - base branch for pull (as retrieved from github)
+    #   - 'master'
+    branch = args.branch or opt_branch or info['base']['ref'] or 'master'
+
+    # Initialize source branches
+    head_branch = 'pull/'+pull+'/head'
+    base_branch = 'pull/'+pull+'/base'
+    merge_branch = 'pull/'+pull+'/merge'
+    local_merge_branch = 'pull/'+pull+'/local-merge'
+
+    devnull = open(os.devnull,'w')
+    try:
+        subprocess.check_call([GIT,'checkout','-q',branch])
+    except subprocess.CalledProcessError as e:
+        print("ERROR: Cannot check out branch %s." % (branch), file=stderr)
+        sys.exit(3)
+    try:
+        subprocess.check_call([GIT,'fetch','-q',host_repo,'+refs/pull/'+pull+'/*:refs/heads/pull/'+pull+'/*',
+                                                          '+refs/heads/'+branch+':refs/heads/'+base_branch])
+    except subprocess.CalledProcessError as e:
+        print("ERROR: Cannot find pull request #%s or branch %s on %s." % (pull,branch,host_repo), file=stderr)
+        sys.exit(3)
+    try:
+        subprocess.check_call([GIT,'log','-q','-1','refs/heads/'+head_branch], stdout=devnull, stderr=stdout)
+    except subprocess.CalledProcessError as e:
+        print("ERROR: Cannot find head of pull request #%s on %s." % (pull,host_repo), file=stderr)
+        sys.exit(3)
+    try:
+        subprocess.check_call([GIT,'log','-q','-1','refs/heads/'+merge_branch], stdout=devnull, stderr=stdout)
+    except subprocess.CalledProcessError as e:
+        print("ERROR: Cannot find merge of pull request #%s on %s." % (pull,host_repo), file=stderr)
+        sys.exit(3)
+    subprocess.check_call([GIT,'checkout','-q',base_branch])
+    subprocess.call([GIT,'branch','-q','-D',local_merge_branch], stderr=devnull)
+    subprocess.check_call([GIT,'checkout','-q','-b',local_merge_branch])
+
+    try:
+        # Go up to the repository's root.
+        toplevel = subprocess.check_output([GIT,'rev-parse','--show-toplevel']).strip()
+        os.chdir(toplevel)
+        # Create unsigned merge commit.
+        if title:
+            firstline = 'Merge #%s: %s' % (pull,title)
+        else:
+            firstline = 'Merge #%s' % (pull,)
+        message = firstline + '\n\n'
+        message += subprocess.check_output([GIT,'log','--no-merges','--topo-order','--pretty=format:%h %s (%an)',base_branch+'..'+head_branch]).decode('utf-8')
+        message += '\n\nPull request description:\n\n  ' + body.replace('\n', '\n  ') + '\n'
+        try:
+            subprocess.check_call([GIT,'merge','-q','--commit','--no-edit','--no-ff','-m',message.encode('utf-8'),head_branch])
+        except subprocess.CalledProcessError as e:
+            print("ERROR: Cannot be merged cleanly.",file=stderr)
+            subprocess.check_call([GIT,'merge','--abort'])
+            sys.exit(4)
+        logmsg = subprocess.check_output([GIT,'log','--pretty=format:%s','-n','1']).decode('utf-8')
+        if logmsg.rstrip() != firstline.rstrip():
+            print("ERROR: Creating merge failed (already merged?).",file=stderr)
+            sys.exit(4)
+
+        symlink_files = get_symlink_files()
+        for f in symlink_files:
+            print("ERROR: File %s was a symlink" % f)
+        if len(symlink_files) > 0:
+            sys.exit(4)
+
+        # Put tree SHA512 into the message
+        try:
+            first_sha512 = tree_sha512sum()
+            message += '\n\nTree-SHA512: ' + first_sha512
+        except subprocess.CalledProcessError as e:
+            print("ERROR: Unable to compute tree hash")
+            sys.exit(4)
+        try:
+            subprocess.check_call([GIT,'commit','--amend','-m',message.encode('utf-8')])
+        except subprocess.CalledProcessError as e:
+            print("ERROR: Cannot update message.", file=stderr)
+            sys.exit(4)
+
+        print_merge_details(pull, title, branch, base_branch, head_branch)
+        print()
+
+        # Run test command if configured.
+        if testcmd:
+            if subprocess.call(testcmd,shell=True):
+                print("ERROR: Running %s failed." % testcmd,file=stderr)
+                sys.exit(5)
+
+            # Show the created merge.
+            diff = subprocess.check_output([GIT,'diff',merge_branch+'..'+local_merge_branch])
+            subprocess.check_call([GIT,'diff',base_branch+'..'+local_merge_branch])
+            if diff:
+                print("WARNING: merge differs from github!",file=stderr)
+                reply = ask_prompt("Type 'ignore' to continue.")
+                if reply.lower() == 'ignore':
+                    print("Difference with github ignored.",file=stderr)
+                else:
+                    sys.exit(6)
+        else:
+            # Verify the result manually.
+            print("Dropping you on a shell so you can try building/testing the merged source.",file=stderr)
+            print("Run 'git diff HEAD~' to show the changes being merged.",file=stderr)
+            print("Type 'exit' when done.",file=stderr)
+            if os.path.isfile('/etc/debian_version'): # Show pull number on Debian default prompt
+                os.putenv('debian_chroot',pull)
+            subprocess.call([BASH,'-i'])
+
+        second_sha512 = tree_sha512sum()
+        if first_sha512 != second_sha512:
+            print("ERROR: Tree hash changed unexpectedly",file=stderr)
+            sys.exit(8)
+
+        # Sign the merge commit.
+        print_merge_details(pull, title, branch, base_branch, head_branch)
+        while True:
+            reply = ask_prompt("Type 's' to sign off on the above merge, or 'x' to reject and exit.").lower()
+            if reply == 's':
+                try:
+                    subprocess.check_call([GIT,'commit','-q','--gpg-sign','--amend','--no-edit'])
+                    break
+                except subprocess.CalledProcessError as e:
+                    print("Error while signing, asking again.",file=stderr)
+            elif reply == 'x':
+                print("Not signing off on merge, exiting.",file=stderr)
+                sys.exit(1)
+
+        # Put the result in branch.
+        subprocess.check_call([GIT,'checkout','-q',branch])
+        subprocess.check_call([GIT,'reset','-q','--hard',local_merge_branch])
+    finally:
+        # Clean up temporary branches.
+        subprocess.call([GIT,'checkout','-q',branch])
+        subprocess.call([GIT,'branch','-q','-D',head_branch],stderr=devnull)
+        subprocess.call([GIT,'branch','-q','-D',base_branch],stderr=devnull)
+        subprocess.call([GIT,'branch','-q','-D',merge_branch],stderr=devnull)
+        subprocess.call([GIT,'branch','-q','-D',local_merge_branch],stderr=devnull)
+
+    # Push the result.
+    while True:
+        reply = ask_prompt("Type 'push' to push the result to %s, branch %s, or 'x' to exit without pushing." % (host_repo,branch)).lower()
+        if reply == 'push':
+            subprocess.check_call([GIT,'push',host_repo,'refs/heads/'+branch])
+            break
+        elif reply == 'x':
+            sys.exit(1)
+
+if __name__ == '__main__':
+    main()
+
--- a/contrib/devtools/github-merge.sh
+++ b/contrib/devtools/github-merge.sh
@@ -1,185 +0,0 @@
-#!/bin/bash
-
-# This script will locally construct a merge commit for a pull request on a
-# github repository, inspect it, sign it and optionally push it.
-
-# The following temporary branches are created/overwritten and deleted:
-# * pull/$PULL/base (the current master we're merging onto)
-# * pull/$PULL/head (the current state of the remote pull request)
-# * pull/$PULL/merge (github's merge)
-# * pull/$PULL/local-merge (our merge)
-
-# In case of a clean merge that is accepted by the user, the local branch with
-# name $BRANCH is overwritten with the merged result, and optionally pushed.
-
-REPO="$(git config --get githubmerge.repository)"
-if [[ "d$REPO" == "d" ]]; then
-  echo "ERROR: No repository configured. Use this command to set:" >&2
-  echo "git config githubmerge.repository <owner>/<repo>" >&2
-  echo "In addition, you can set the following variables:" >&2
-  echo "- githubmerge.host (default git@github.com)" >&2
-  echo "- githubmerge.branch (default master)" >&2
-  echo "- githubmerge.testcmd (default none)" >&2
-  exit 1
-fi
-
-HOST="$(git config --get githubmerge.host)"
-if [[ "d$HOST" == "d" ]]; then
-  HOST="git@github.com"
-fi
-
-BRANCH="$(git config --get githubmerge.branch)"
-if [[ "d$BRANCH" == "d" ]]; then
-  BRANCH="master"
-fi
-
-TESTCMD="$(git config --get githubmerge.testcmd)"
-
-PULL="$1"
-
-if [[ "d$PULL" == "d" ]]; then
-  echo "Usage: $0 pullnumber [branch]" >&2
-  exit 2
-fi
-
-if [[ "d$2" != "d" ]]; then
-  BRANCH="$2"
-fi
-
-# Initialize source branches.
-git checkout -q "$BRANCH"
-if git fetch -q "$HOST":"$REPO" "+refs/pull/$PULL/*:refs/heads/pull/$PULL/*"; then
-  if ! git log -q -1 "refs/heads/pull/$PULL/head" >/dev/null 2>&1; then
-    echo "ERROR: Cannot find head of pull request #$PULL on $HOST:$REPO." >&2
-    exit 3
-  fi
-  if ! git log -q -1 "refs/heads/pull/$PULL/merge" >/dev/null 2>&1; then
-    echo "ERROR: Cannot find merge of pull request #$PULL on $HOST:$REPO." >&2
-    exit 3
-  fi
-else
-  echo "ERROR: Cannot find pull request #$PULL on $HOST:$REPO." >&2
-  exit 3
-fi
-if git fetch -q "$HOST":"$REPO" +refs/heads/"$BRANCH":refs/heads/pull/"$PULL"/base; then
-  true
-else
-  echo "ERROR: Cannot find branch $BRANCH on $HOST:$REPO." >&2
-  exit 3
-fi
-git checkout -q pull/"$PULL"/base
-git branch -q -D pull/"$PULL"/local-merge 2>/dev/null
-git checkout -q -b pull/"$PULL"/local-merge
-TMPDIR="$(mktemp -d -t ghmXXXXX)"
-
-function cleanup() {
-  git checkout -q "$BRANCH"
-  git branch -q -D pull/"$PULL"/head 2>/dev/null
-  git branch -q -D pull/"$PULL"/base 2>/dev/null
-  git branch -q -D pull/"$PULL"/merge 2>/dev/null
-  git branch -q -D pull/"$PULL"/local-merge 2>/dev/null
-  rm -rf "$TMPDIR"
-}
-
-# Create unsigned merge commit.
-(
-  echo "Merge pull request #$PULL"
-  echo ""
-  git log --no-merges --topo-order --pretty='format:%h %s (%an)' pull/"$PULL"/base..pull/"$PULL"/head
-)>"$TMPDIR/message"
-if git merge -q --commit --no-edit --no-ff -m "$(<"$TMPDIR/message")" pull/"$PULL"/head; then
-  if [ "d$(git log --pretty='format:%s' -n 1)" != "dMerge pull request #$PULL" ]; then
-    echo "ERROR: Creating merge failed (already merged?)." >&2
-    cleanup
-    exit 4
-  fi
-else
-  echo "ERROR: Cannot be merged cleanly." >&2
-  git merge --abort
-  cleanup
-  exit 4
-fi
-
-# Run test command if configured.
-if [[ "d$TESTCMD" != "d" ]]; then
-  # Go up to the repository's root.
-  while [ ! -d .git ]; do cd ..; done
-  if ! $TESTCMD; then
-    echo "ERROR: Running $TESTCMD failed." >&2
-    cleanup
-    exit 5
-  fi
-  # Show the created merge.
-  git diff pull/"$PULL"/merge..pull/"$PULL"/local-merge >"$TMPDIR"/diff
-  git diff pull/"$PULL"/base..pull/"$PULL"/local-merge
-  if [[ "$(<"$TMPDIR"/diff)" != "" ]]; then
-    echo "WARNING: merge differs from github!" >&2
-    read -p "Type 'ignore' to continue. " -r >&2
-    if [[ "d$REPLY" =~ ^d[iI][gG][nN][oO][rR][eE]$ ]]; then
-      echo "Difference with github ignored." >&2
-    else
-      cleanup
-      exit 6
-    fi
-  fi
-  read -p "Press 'd' to accept the diff. " -n 1 -r >&2
-  echo
-  if [[ "d$REPLY" =~ ^d[dD]$ ]]; then
-    echo "Diff accepted." >&2
-  else
-    echo "ERROR: Diff rejected." >&2
-    cleanup
-    exit 6
-  fi
-else
-  # Verify the result.
-  echo "Dropping you on a shell so you can try building/testing the merged source." >&2
-  echo "Run 'git diff HEAD~' to show the changes being merged." >&2
-  echo "Type 'exit' when done." >&2
-  if [[ -f /etc/debian_version ]]; then # Show pull number in prompt on Debian default prompt
-      export debian_chroot="$PULL"
-  fi
-  bash -i
-  read -p "Press 'm' to accept the merge. " -n 1 -r >&2
-  echo
-  if [[ "d$REPLY" =~ ^d[Mm]$ ]]; then
-    echo "Merge accepted." >&2
-  else
-    echo "ERROR: Merge rejected." >&2
-    cleanup
-    exit 7
-  fi
-fi
-
-# Sign the merge commit.
-read -p "Press 's' to sign off on the merge. " -n 1 -r >&2
-echo
-if [[ "d$REPLY" =~ ^d[Ss]$ ]]; then
-  if [[ "$(git config --get user.signingkey)" == "" ]]; then
-    echo "ERROR: No GPG signing key set, not signing. Set one using:" >&2
-    echo "git config --global user.signingkey <key>" >&2
-    cleanup
-    exit 1
-  else
-    if ! git commit -q --gpg-sign --amend --no-edit; then
-        echo "Error signing, exiting."
-        cleanup
-        exit 1
-    fi
-  fi
-else
-  echo "Not signing off on merge, exiting."
-  cleanup
-  exit 1
-fi
-
-# Clean up temporary branches, and put the result in $BRANCH.
-git checkout -q "$BRANCH"
-git reset -q --hard pull/"$PULL"/local-merge
-cleanup
-
-# Push the result.
-read -p "Type 'push' to push the result to $HOST:$REPO, branch $BRANCH. " -r >&2
-if [[ "d$REPLY" =~ ^d[Pp][Uu][Ss][Hh]$ ]]; then
-  git push "$HOST":"$REPO" refs/heads/"$BRANCH"
-fi
--- a/contrib/devtools/lint-all.sh
+++ b/contrib/devtools/lint-all.sh
@@ -0,0 +1,22 @@
+#!/bin/bash
+#
+# Copyright (c) 2017 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+#
+# This script runs all contrib/devtools/lint-*.sh files, and fails if any exit
+# with a non-zero status code.
+
+set -u
+
+SCRIPTDIR=$(dirname "${BASH_SOURCE[0]}")
+LINTALL=$(basename "${BASH_SOURCE[0]}")
+
+for f in "${SCRIPTDIR}"/lint-*.sh; do
+  if [ "$(basename "$f")" != "$LINTALL" ]; then
+    if ! "$f"; then
+      echo "^---- failure generated from $f"
+      exit 1
+    fi
+  fi
+done
--- a/contrib/devtools/lint-python.sh
+++ b/contrib/devtools/lint-python.sh
@@ -0,0 +1,10 @@
+#!/bin/sh
+#
+# Copyright (c) 2017 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+#
+# Check for specified flake8 warnings in python files.
+
+# F401: module imported but unused
+flake8 --ignore=B,C,E,F,I,N,W --select=F401 .
--- a/contrib/devtools/lint-whitespace.sh
+++ b/contrib/devtools/lint-whitespace.sh
@@ -0,0 +1,88 @@
+#!/bin/bash
+#
+# Copyright (c) 2017 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+#
+# Check for new lines in diff that introduce trailing whitespace.
+
+# We can't run this check unless we know the commit range for the PR.
+if [ -z "${TRAVIS_COMMIT_RANGE}" ]; then
+  echo "Cannot run lint-whitespace.sh without commit range. To run locally, use:"
+  echo "TRAVIS_COMMIT_RANGE='<commit range>' .lint-whitespace.sh"
+  echo "For example:"
+  echo "TRAVIS_COMMIT_RANGE='47ba2c3...ee50c9e' .lint-whitespace.sh"
+  exit 1
+fi
+
+showdiff() {
+  if ! git diff -U0 "${TRAVIS_COMMIT_RANGE}" -- "." ":(exclude)src/leveldb/" ":(exclude)src/secp256k1/" ":(exclude)src/univalue/" ":(exclude)doc/release-notes/"; then
+    echo "Failed to get a diff"
+    exit 1
+  fi
+}
+
+showcodediff() {
+  if ! git diff -U0 "${TRAVIS_COMMIT_RANGE}" -- *.cpp *.h *.md *.py *.sh ":(exclude)src/leveldb/" ":(exclude)src/secp256k1/" ":(exclude)src/univalue/" ":(exclude)doc/release-notes/"; then
+    echo "Failed to get a diff"
+    exit 1
+  fi
+}
+
+RET=0
+
+# Check if trailing whitespace was found in the diff.
+if showdiff | grep -E -q '^\+.*\s+$'; then
+  echo "This diff appears to have added new lines with trailing whitespace."
+  echo "The following changes were suspected:"
+  FILENAME=""
+  SEEN=0
+  while read -r line; do
+    if [[ "$line" =~ ^diff ]]; then
+      FILENAME="$line"
+      SEEN=0
+    elif [[ "$line" =~ ^@@ ]]; then
+      LINENUMBER="$line"
+    else
+      if [ "$SEEN" -eq 0 ]; then
+        # The first time a file is seen with trailing whitespace, we print the
+        # filename (preceded by a newline).
+        echo
+        echo "$FILENAME"
+        echo "$LINENUMBER"
+        SEEN=1
+      fi
+      echo "$line"
+    fi
+  done < <(showdiff | grep -E '^(diff --git |@@|\+.*\s+$)')
+  RET=1
+fi
+
+# Check if tab characters were found in the diff.
+if showcodediff | grep -P -q '^\+.*\t'; then
+  echo "This diff appears to have added new lines with tab characters instead of spaces."
+  echo "The following changes were suspected:"
+  FILENAME=""
+  SEEN=0
+  while read -r line; do
+    if [[ "$line" =~ ^diff ]]; then
+      FILENAME="$line"
+      SEEN=0
+    elif [[ "$line" =~ ^@@ ]]; then
+      LINENUMBER="$line"
+    else
+      if [ "$SEEN" -eq 0 ]; then
+        # The first time a file is seen with a tab character, we print the
+        # filename (preceded by a newline).
+        echo
+        echo "$FILENAME"
+        echo "$LINENUMBER"
+        SEEN=1
+      fi
+      echo "$line"
+    fi
+  done < <(showcodediff | grep -P '^(diff --git |@@|\+.*\t)')
+  RET=1
+fi
+
+exit $RET
--- a/contrib/devtools/optimize-pngs.py
+++ b/contrib/devtools/optimize-pngs.py
@@ -1,4 +1,7 @@
 #!/usr/bin/env python
+# Copyright (c) 2014-2017 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
 '''
 Run this script every time you change one of the png files. Using pngcrush, it will optimize the png files, remove various color profiles, remove ancillary chunks (alla) and text chunks (text).
 #pngcrush -brute -ow -rem gAMA -rem cHRM -rem iCCP -rem sRGB -rem alla -rem text
@@ -36,7 +39,7 @@ for folder in folders:
        if extension.lower() == '.png':
            print("optimizing "+file+"..."),
            file_path = os.path.join(absFolder, file)
-            fileMetaMap = {'file' : file, 'osize': os.path.getsize(file_path), 'sha256Old' : file_hash(file_path)};
+            fileMetaMap = {'file' : file, 'osize': os.path.getsize(file_path), 'sha256Old' : file_hash(file_path)}
            fileMetaMap['contentHashPre'] = content_hash(file_path)
        
            pngCrushOutput = ""
--- a/contrib/devtools/security-check.py
+++ b/contrib/devtools/security-check.py
@@ -1,17 +1,21 @@
-#!/usr/bin/python2
+#!/usr/bin/env python
+# Copyright (c) 2015-2017 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
 '''
 Perform basic ELF security checks on a series of executables.
-Exit status will be 0 if succesful, and the program will be silent.
+Exit status will be 0 if successful, and the program will be silent.
 Otherwise the exit status will be 1 and it will log which executables failed which checks.
 Needs `readelf` (for ELF) and `objdump` (for PE).
 '''
-from __future__ import division,print_function
+from __future__ import division,print_function,unicode_literals
 import subprocess
 import sys
 import os

 READELF_CMD = os.getenv('READELF', '/usr/bin/readelf')
 OBJDUMP_CMD = os.getenv('OBJDUMP', '/usr/bin/objdump')
+NONFATAL = {'HIGH_ENTROPY_VA'} # checks which are non-fatal for now but only generate a warning

 def check_ELF_PIE(executable):
    '''
@@ -23,9 +27,9 @@ def check_ELF_PIE(executable):
        raise IOError('Error opening file')

    ok = False
-    for line in stdout.split('\n'):
+    for line in stdout.split(b'\n'):
        line = line.split()
-        if len(line)>=2 and line[0] == 'Type:' and line[1] == 'DYN':
+        if len(line)>=2 and line[0] == b'Type:' and line[1] == b'DYN':
            ok = True
    return ok

@@ -38,17 +42,17 @@ def get_ELF_program_headers(executable):
    in_headers = False
    count = 0
    headers = []
-    for line in stdout.split('\n'):
-        if line.startswith('Program Headers:'):
+    for line in stdout.split(b'\n'):
+        if line.startswith(b'Program Headers:'):
            in_headers = True
-        if line == '':
+        if line == b'':
            in_headers = False
        if in_headers:
            if count == 1: # header line
-                ofs_typ = line.find('Type')
-                ofs_offset = line.find('Offset')
-                ofs_flags = line.find('Flg')
-                ofs_align = line.find('Align')
+                ofs_typ = line.find(b'Type')
+                ofs_offset = line.find(b'Offset')
+                ofs_flags = line.find(b'Flg')
+                ofs_align = line.find(b'Align')
                if ofs_typ == -1 or ofs_offset == -1 or ofs_flags == -1 or ofs_align  == -1:
                    raise ValueError('Cannot parse elfread -lW output')
            elif count > 1:
@@ -65,9 +69,9 @@ def check_ELF_NX(executable):
    have_wx = False
    have_gnu_stack = False
    for (typ, flags) in get_ELF_program_headers(executable):
-        if typ == 'GNU_STACK':
+        if typ == b'GNU_STACK':
            have_gnu_stack = True
-        if 'W' in flags and 'E' in flags: # section is both writable and executable
+        if b'W' in flags and b'E' in flags: # section is both writable and executable
            have_wx = True
    return have_gnu_stack and not have_wx

@@ -84,7 +88,7 @@ def check_ELF_RELRO(executable):
        # However, the dynamic linker need to write to this area so these are RW.
        # Glibc itself takes care of mprotecting this area R after relocations are finished.
        # See also http://permalink.gmane.org/gmane.comp.gnu.binutils/71347
-        if typ == 'GNU_RELRO':
+        if typ == b'GNU_RELRO':
            have_gnu_relro = True

    have_bindnow = False
@@ -92,9 +96,9 @@ def check_ELF_RELRO(executable):
    (stdout, stderr) = p.communicate()
    if p.returncode:
        raise IOError('Error opening file')
-    for line in stdout.split('\n'):
+    for line in stdout.split(b'\n'):
        tokens = line.split()
-        if len(tokens)>1 and tokens[1] == '(BIND_NOW)':
+        if len(tokens)>1 and tokens[1] == b'(BIND_NOW)' or (len(tokens)>2 and tokens[1] == b'(FLAGS)' and b'BIND_NOW' in tokens[2]):
            have_bindnow = True
    return have_gnu_relro and have_bindnow

@@ -107,33 +111,57 @@ def check_ELF_Canary(executable):
    if p.returncode:
        raise IOError('Error opening file')
    ok = False
-    for line in stdout.split('\n'):
-        if '__stack_chk_fail' in line:
+    for line in stdout.split(b'\n'):
+        if b'__stack_chk_fail' in line:
            ok = True
    return ok

 def get_PE_dll_characteristics(executable):
    '''
-    Get PE DllCharacteristics bits
+    Get PE DllCharacteristics bits.
+    Returns a tuple (arch,bits) where arch is 'i386:x86-64' or 'i386'
+    and bits is the DllCharacteristics value.
    '''
    p = subprocess.Popen([OBJDUMP_CMD, '-x',  executable], stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE)
    (stdout, stderr) = p.communicate()
    if p.returncode:
        raise IOError('Error opening file')
+    arch = ''
+    bits = 0
    for line in stdout.split('\n'):
        tokens = line.split()
+        if len(tokens)>=2 and tokens[0] == 'architecture:':
+            arch = tokens[1].rstrip(',')
        if len(tokens)>=2 and tokens[0] == 'DllCharacteristics':
-            return int(tokens[1],16)
-    return 0
+            bits = int(tokens[1],16)
+    return (arch,bits)

+IMAGE_DLL_CHARACTERISTICS_HIGH_ENTROPY_VA = 0x0020
+IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE    = 0x0040
+IMAGE_DLL_CHARACTERISTICS_NX_COMPAT       = 0x0100

-def check_PE_PIE(executable):
+def check_PE_DYNAMIC_BASE(executable):
    '''PIE: DllCharacteristics bit 0x40 signifies dynamicbase (ASLR)'''
-    return bool(get_PE_dll_characteristics(executable) & 0x40)
+    (arch,bits) = get_PE_dll_characteristics(executable)
+    reqbits = IMAGE_DLL_CHARACTERISTICS_DYNAMIC_BASE
+    return (bits & reqbits) == reqbits
+
+# On 64 bit, must support high-entropy 64-bit address space layout randomization in addition to DYNAMIC_BASE
+# to have secure ASLR.
+def check_PE_HIGH_ENTROPY_VA(executable):
+    '''PIE: DllCharacteristics bit 0x20 signifies high-entropy ASLR'''
+    (arch,bits) = get_PE_dll_characteristics(executable)
+    if arch == 'i386:x86-64': 
+        reqbits = IMAGE_DLL_CHARACTERISTICS_HIGH_ENTROPY_VA
+    else: # Unnecessary on 32-bit
+        assert(arch == 'i386')
+        reqbits = 0
+    return (bits & reqbits) == reqbits

 def check_PE_NX(executable):
    '''NX: DllCharacteristics bit 0x100 signifies nxcompat (DEP)'''
-    return bool(get_PE_dll_characteristics(executable) & 0x100)
+    (arch,bits) = get_PE_dll_characteristics(executable)
+    return (bits & IMAGE_DLL_CHARACTERISTICS_NX_COMPAT) == IMAGE_DLL_CHARACTERISTICS_NX_COMPAT

 CHECKS = {
 'ELF': [
@@ -143,7 +171,8 @@ CHECKS = {
    ('Canary', check_ELF_Canary)
 ],
 'PE': [
-    ('PIE', check_PE_PIE),
+    ('DYNAMIC_BASE', check_PE_DYNAMIC_BASE),
+    ('HIGH_ENTROPY_VA', check_PE_HIGH_ENTROPY_VA),
    ('NX', check_PE_NX)
 ]
 }
@@ -168,14 +197,20 @@ if __name__ == '__main__':
                continue

            failed = []
+            warning = []
            for (name, func) in CHECKS[etype]:
                if not func(filename):
-                    failed.append(name)
+                    if name in NONFATAL:
+                        warning.append(name)
+                    else:
+                        failed.append(name)
            if failed:
                print('%s: failed %s' % (filename, ' '.join(failed)))
                retval = 1
+            if warning:
+                print('%s: warning %s' % (filename, ' '.join(warning)))
        except IOError:
            print('%s: cannot open' % filename)
            retval = 1
-    exit(retval)
+    sys.exit(retval)

--- a/contrib/devtools/split-debug.sh.in
+++ b/contrib/devtools/split-debug.sh.in
@@ -0,0 +1,10 @@
+#!/bin/sh
+
+if [ $# -ne 3 ];
+    then echo "usage: $0 <input> <stripped-binary> <debug-binary>"
+fi
+
+@OBJCOPY@ --enable-deterministic-archives -p --only-keep-debug $1 $3
+@OBJCOPY@ --enable-deterministic-archives -p --strip-debug $1 $2
+@STRIP@ --enable-deterministic-archives -p -s $2
+@OBJCOPY@ --enable-deterministic-archives -p --add-gnu-debuglink=$3 $2
--- a/contrib/devtools/symbol-check.py
+++ b/contrib/devtools/symbol-check.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python2
+#!/usr/bin/env python
 # Copyright (c) 2014 Wladimir J. van der Laan
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
@@ -11,7 +11,7 @@ Example usage:

    find ../gitian-builder/build -type f -executable | xargs python contrib/devtools/symbol-check.py
 '''
-from __future__ import division, print_function
+from __future__ import division, print_function, unicode_literals
 import subprocess
 import re
 import sys
@@ -42,30 +42,33 @@ MAX_VERSIONS = {
 'GLIBCXX': (3,4,13),
 'GLIBC':   (2,11)
 }
+# See here for a description of _IO_stdin_used:
+# https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=634261#109
+
 # Ignore symbols that are exported as part of every executable
 IGNORE_EXPORTS = {
-'_edata', '_end', '_init', '__bss_start', '_fini'
+b'_edata', b'_end', b'_init', b'__bss_start', b'_fini', b'_IO_stdin_used'
 }
 READELF_CMD = os.getenv('READELF', '/usr/bin/readelf')
 CPPFILT_CMD = os.getenv('CPPFILT', '/usr/bin/c++filt')
 # Allowed NEEDED libraries
 ALLOWED_LIBRARIES = {
 # bitcoind and bitcoin-qt
-'libgcc_s.so.1', # GCC base support
-'libc.so.6', # C library
-'libpthread.so.0', # threading
-'libanl.so.1', # DNS resolve
-'libm.so.6', # math library
-'librt.so.1', # real-time (clock)
-'ld-linux-x86-64.so.2', # 64-bit dynamic linker
-'ld-linux.so.2', # 32-bit dynamic linker
+b'libgcc_s.so.1', # GCC base support
+b'libc.so.6', # C library
+b'libpthread.so.0', # threading
+b'libanl.so.1', # DNS resolve
+b'libm.so.6', # math library
+b'librt.so.1', # real-time (clock)
+b'ld-linux-x86-64.so.2', # 64-bit dynamic linker
+b'ld-linux.so.2', # 32-bit dynamic linker
 # bitcoin-qt only
-'libX11-xcb.so.1', # part of X11
-'libX11.so.6', # part of X11
-'libxcb.so.1', # part of X11
-'libfontconfig.so.1', # font support
-'libfreetype.so.6', # font parsing
-'libdl.so.2' # programming interface to dynamic linker
+b'libX11-xcb.so.1', # part of X11
+b'libX11.so.6', # part of X11
+b'libxcb.so.1', # part of X11
+b'libfontconfig.so.1', # font support
+b'libfreetype.so.6', # font parsing
+b'libdl.so.2' # programming interface to dynamic linker
 }

 class CPPFilt(object):
@@ -78,7 +81,8 @@ class CPPFilt(object):
        self.proc = subprocess.Popen(CPPFILT_CMD, stdin=subprocess.PIPE, stdout=subprocess.PIPE)

    def __call__(self, mangled):
-        self.proc.stdin.write(mangled + '\n')
+        self.proc.stdin.write(mangled + b'\n')
+        self.proc.stdin.flush()
        return self.proc.stdout.readline().rstrip()

    def close(self):
@@ -96,24 +100,24 @@ def read_symbols(executable, imports=True):
    if p.returncode:
        raise IOError('Could not read symbols for %s: %s' % (executable, stderr.strip()))
    syms = []
-    for line in stdout.split('\n'):
+    for line in stdout.split(b'\n'):
        line = line.split()
-        if len(line)>7 and re.match('[0-9]+:$', line[0]):
-            (sym, _, version) = line[7].partition('@')
-            is_import = line[6] == 'UND'
-            if version.startswith('@'):
+        if len(line)>7 and re.match(b'[0-9]+:$', line[0]):
+            (sym, _, version) = line[7].partition(b'@')
+            is_import = line[6] == b'UND'
+            if version.startswith(b'@'):
                version = version[1:]
            if is_import == imports:
                syms.append((sym, version))
    return syms

 def check_version(max_versions, version):
-    if '_' in version:
-        (lib, _, ver) = version.rpartition('_')
+    if b'_' in version:
+        (lib, _, ver) = version.rpartition(b'_')
    else:
        lib = version
        ver = '0'
-    ver = tuple([int(x) for x in ver.split('.')])
+    ver = tuple([int(x) for x in ver.split(b'.')])
    if not lib in max_versions:
        return False
    return ver <= max_versions[lib]
@@ -124,10 +128,10 @@ def read_libraries(filename):
    if p.returncode:
        raise IOError('Error opening file')
    libraries = []
-    for line in stdout.split('\n'):
+    for line in stdout.split(b'\n'):
        tokens = line.split()
-        if len(tokens)>2 and tokens[1] == '(NEEDED)':
-            match = re.match('^Shared library: \[(.*)\]$', ' '.join(tokens[2:]))
+        if len(tokens)>2 and tokens[1] == b'(NEEDED)':
+            match = re.match(b'^Shared library: \[(.*)\]$', b' '.join(tokens[2:]))
            if match:
                libraries.append(match.group(1))
            else:
@@ -141,20 +145,20 @@ if __name__ == '__main__':
        # Check imported symbols
        for sym,version in read_symbols(filename, True):
            if version and not check_version(MAX_VERSIONS, version):
-                print('%s: symbol %s from unsupported version %s' % (filename, cppfilt(sym), version))
+                print('%s: symbol %s from unsupported version %s' % (filename, cppfilt(sym).decode('utf-8'), version.decode('utf-8')))
                retval = 1
        # Check exported symbols
        for sym,version in read_symbols(filename, False):
            if sym in IGNORE_EXPORTS:
                continue
-            print('%s: export of symbol %s not allowed' % (filename, cppfilt(sym)))
+            print('%s: export of symbol %s not allowed' % (filename, cppfilt(sym).decode('utf-8')))
            retval = 1
        # Check dependency libraries
        for library_name in read_libraries(filename):
            if library_name not in ALLOWED_LIBRARIES:
-                print('%s: NEEDED library %s is not allowed' % (filename, library_name))
+                print('%s: NEEDED library %s is not allowed' % (filename, library_name.decode('utf-8')))
                retval = 1

-    exit(retval)
+    sys.exit(retval)


--- a/contrib/devtools/test-security-check.py
+++ b/contrib/devtools/test-security-check.py
@@ -1,10 +1,12 @@
-#!/usr/bin/python2
+#!/usr/bin/env python2
+# Copyright (c) 2015-2017 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
 '''
 Test script for security-check.py
 '''
 from __future__ import division,print_function
 import subprocess
-import sys
 import unittest

 def write_testcode(filename):
--- a/contrib/devtools/update-translations.py
+++ b/contrib/devtools/update-translations.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 # Copyright (c) 2014 Wladimir J. van der Laan
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
@@ -36,12 +36,12 @@ def check_at_repository_root():
    if not os.path.exists('.git'):
        print('No .git directory found')
        print('Execute this script at the root of the repository', file=sys.stderr)
-        exit(1)
+        sys.exit(1)

 def fetch_all_translations():
    if subprocess.call([TX, 'pull', '-f', '-a']):
        print('Error while fetching translations', file=sys.stderr)
-        exit(1)
+        sys.exit(1)

 def find_format_specifiers(s):
    '''Find all format specifiers in a string.'''
@@ -65,6 +65,14 @@ def split_format_specifiers(specifiers):
        else:
            other.append(s)

+    # If both numeric format specifiers and "others" are used, assume we're dealing
+    # with a Qt-formatted message. In the case of Qt formatting (see https://doc.qt.io/qt-5/qstring.html#arg)
+    # only numeric formats are replaced at all. This means "(percentage: %1%)" is valid, without needing
+    # any kind of escaping that would be necessary for strprintf. Without this, this function
+    # would wrongly detect '%)' as a printf format specifier.
+    if numeric:
+        other = []
+
    # numeric (Qt) can be present in any order, others (strprintf) must be in specified order
    return set(numeric),other

@@ -72,7 +80,7 @@ def sanitize_string(s):
    '''Sanitize string for printing'''
    return s.replace('\n',' ')

-def check_format_specifiers(source, translation, errors):
+def check_format_specifiers(source, translation, errors, numerus):
    source_f = split_format_specifiers(find_format_specifiers(source))
    # assert that no source messages contain both Qt and strprintf format specifiers
    # if this fails, go change the source as this is hacky and confusing!
@@ -80,10 +88,13 @@ def check_format_specifiers(source, translation, errors):
    try:
        translation_f = split_format_specifiers(find_format_specifiers(translation))
    except IndexError:
-        errors.append("Parse error in translation '%s'" % sanitize_string(translation))
+        errors.append("Parse error in translation for '%s': '%s'" % (sanitize_string(source), sanitize_string(translation)))
        return False
    else:
        if source_f != translation_f:
+            if numerus and source_f == (set(), ['n']) and translation_f == (set(), []) and translation.find('%') == -1:
+                # Allow numerus translations to omit %n specifier (usually when it only has one possible value)
+                return True
            errors.append("Mismatch between '%s' and '%s'" % (sanitize_string(source), sanitize_string(translation)))
            return False
    return True
@@ -150,7 +161,7 @@ def postprocess_translations(reduce_diff_hacks=False):
                    if translation is None:
                        continue
                    errors = []
-                    valid = check_format_specifiers(source, translation, errors)
+                    valid = check_format_specifiers(source, translation, errors, numerus)

                    for error in errors:
                        print('%s: %s' % (filename, error))
--- a/contrib/filter-lcov.py
+++ b/contrib/filter-lcov.py
@@ -0,0 +1,25 @@
+#!/usr/bin/env python3
+
+import argparse
+
+parser = argparse.ArgumentParser(description='Remove the coverage data from a tracefile for all files matching the pattern.')
+parser.add_argument('--pattern', '-p', action='append', help='the pattern of files to remove', required=True)
+parser.add_argument('tracefile', help='the tracefile to remove the coverage data from')
+parser.add_argument('outfile', help='filename for the output to be written to')
+
+args = parser.parse_args()
+tracefile = args.tracefile
+pattern = args.pattern
+outfile = args.outfile
+
+in_remove = False
+with open(tracefile, 'r') as f:
+    with open(outfile, 'w') as wf:
+        for line in f:
+            for p in pattern:
+                if line.startswith("SF:") and p in line:
+                    in_remove = True
+            if not in_remove:
+                wf.write(line)
+            if line == 'end_of_record\n':
+                in_remove = False
--- a/contrib/gitian-build.sh
+++ b/contrib/gitian-build.sh
@@ -0,0 +1,389 @@
+# Copyright (c) 2016 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+# What to do
+sign=false
+verify=false
+build=false
+
+# Systems to build
+linux=true
+windows=true
+osx=true
+
+# Other Basic variables
+SIGNER=
+VERSION=
+commit=false
+url=https://github.com/bitcoin/bitcoin
+proc=2
+mem=2000
+lxc=true
+osslTarUrl=http://downloads.sourceforge.net/project/osslsigncode/osslsigncode/osslsigncode-1.7.1.tar.gz
+osslPatchUrl=https://bitcoincore.org/cfields/osslsigncode-Backports-to-1.7.1.patch
+scriptName=$(basename -- "$0")
+signProg="gpg --detach-sign"
+commitFiles=true
+
+# Help Message
+read -d '' usage <<- EOF
+Usage: $scriptName [-c|u|v|b|s|B|o|h|j|m|] signer version
+
+Run this script from the directory containing the bitcoin, gitian-builder, gitian.sigs, and bitcoin-detached-sigs.
+
+Arguments:
+signer          GPG signer to sign each build assert file
+version		Version number, commit, or branch to build. If building a commit or branch, the -c option must be specified
+
+Options:
+-c|--commit	Indicate that the version argument is for a commit or branch
+-u|--url	Specify the URL of the repository. Default is https://github.com/bitcoin/bitcoin
+-v|--verify 	Verify the Gitian build
+-b|--build	Do a Gitian build
+-s|--sign	Make signed binaries for Windows and Mac OSX
+-B|--buildsign	Build both signed and unsigned binaries
+-o|--os		Specify which Operating Systems the build is for. Default is lwx. l for linux, w for windows, x for osx
+-j		Number of processes to use. Default 2
+-m		Memory to allocate in MiB. Default 2000
+--kvm           Use KVM instead of LXC
+--setup         Set up the Gitian building environment. Uses KVM. If you want to use lxc, use the --lxc option. Only works on Debian-based systems (Ubuntu, Debian)
+--detach-sign   Create the assert file for detached signing. Will not commit anything.
+--no-commit     Do not commit anything to git
+-h|--help	Print this help message
+EOF
+
+# Get options and arguments
+while :; do
+    case $1 in
+        # Verify
+        -v|--verify)
+	    verify=true
+            ;;
+        # Build
+        -b|--build)
+	    build=true
+            ;;
+        # Sign binaries
+        -s|--sign)
+	    sign=true
+            ;;
+        # Build then Sign
+        -B|--buildsign)
+	    sign=true
+	    build=true
+            ;;
+        # PGP Signer
+        -S|--signer)
+	    if [ -n "$2" ]
+	    then
+		SIGNER=$2
+		shift
+	    else
+		echo 'Error: "--signer" requires a non-empty argument.'
+		exit 1
+	    fi
+           ;;
+        # Operating Systems
+        -o|--os)
+	    if [ -n "$2" ]
+	    then
+		linux=false
+		windows=false
+		osx=false
+		if [[ "$2" = *"l"* ]]
+		then
+		    linux=true
+		fi
+		if [[ "$2" = *"w"* ]]
+		then
+		    windows=true
+		fi
+		if [[ "$2" = *"x"* ]]
+		then
+		    osx=true
+		fi
+		shift
+	    else
+		echo 'Error: "--os" requires an argument containing an l (for linux), w (for windows), or x (for Mac OSX)'
+		exit 1
+	    fi
+	    ;;
+	# Help message
+	-h|--help)
+	    echo "$usage"
+	    exit 0
+	    ;;
+	# Commit or branch
+	-c|--commit)
+	    commit=true
+	    ;;
+	# Number of Processes
+	-j)
+	    if [ -n "$2" ]
+	    then
+		proc=$2
+		shift
+	    else
+		echo 'Error: "-j" requires an argument'
+		exit 1
+	    fi
+	    ;;
+	# Memory to allocate
+	-m)
+	    if [ -n "$2" ]
+	    then
+		mem=$2
+		shift
+	    else
+		echo 'Error: "-m" requires an argument'
+		exit 1
+	    fi
+	    ;;
+	# URL
+	-u)
+	    if [ -n "$2" ]
+	    then
+		url=$2
+		shift
+	    else
+		echo 'Error: "-u" requires an argument'
+		exit 1
+	    fi
+	    ;;
+        # kvm
+        --kvm)
+            lxc=false
+            ;;
+        # Detach sign
+        --detach-sign)
+            signProg="true"
+            commitFiles=false
+            ;;
+        # Commit files
+        --no-commit)
+            commitFiles=false
+            ;;
+        # Setup
+        --setup)
+            setup=true
+            ;;
+	*)               # Default case: If no more options then break out of the loop.
+             break
+    esac
+    shift
+done
+
+# Set up LXC
+if [[ $lxc = true ]]
+then
+    export USE_LXC=1
+fi
+
+# Check for OSX SDK
+if [[ ! -e "gitian-builder/inputs/MacOSX10.11.sdk.tar.gz" && $osx == true ]]
+then
+    echo "Cannot build for OSX, SDK does not exist. Will build for other OSes"
+    osx=false
+fi
+
+# Get signer
+if [[ -n "$1" ]]
+then
+    SIGNER=$1
+    shift
+fi
+
+# Get version
+if [[ -n "$1" ]]
+then
+    VERSION=$1
+    COMMIT=$VERSION
+    shift
+fi
+
+# Check that a signer is specified
+if [[ $SIGNER == "" ]]
+then
+    echo "$scriptName: Missing signer."
+    echo "Try $scriptName --help for more information"
+    exit 1
+fi
+
+# Check that a version is specified
+if [[ $VERSION == "" ]]
+then
+    echo "$scriptName: Missing version."
+    echo "Try $scriptName --help for more information"
+    exit 1
+fi
+
+# Add a "v" if no -c
+if [[ $commit = false ]]
+then
+	COMMIT="v${VERSION}"
+fi
+echo ${COMMIT}
+
+# Setup build environment
+if [[ $setup = true ]]
+then
+    sudo apt-get install ruby apache2 git apt-cacher-ng python-vm-builder qemu-kvm qemu-utils
+    git clone https://github.com/bitcoin-core/gitian.sigs.git
+    git clone https://github.com/bitcoin-core/bitcoin-detached-sigs.git
+    git clone https://github.com/devrandom/gitian-builder.git
+    pushd ./gitian-builder
+    if [[ -n "$USE_LXC" ]]
+    then
+        sudo apt-get install lxc
+        bin/make-base-vm --suite trusty --arch amd64 --lxc
+    else
+        bin/make-base-vm --suite trusty --arch amd64
+    fi
+    popd
+fi
+
+# Set up build
+pushd ./bitcoin
+git fetch
+git checkout ${COMMIT}
+popd
+
+# Build
+if [[ $build = true ]]
+then
+	# Make output folder
+	mkdir -p ./bitcoin-binaries/${VERSION}
+	
+	# Build Dependencies
+	echo ""
+	echo "Building Dependencies"
+	echo ""
+	pushd ./gitian-builder	
+	mkdir -p inputs
+	wget -N -P inputs $osslPatchUrl
+	wget -N -P inputs $osslTarUrl
+	make -C ../bitcoin/depends download SOURCES_PATH=`pwd`/cache/common
+
+	# Linux
+	if [[ $linux = true ]]
+	then
+            echo ""
+	    echo "Compiling ${VERSION} Linux"
+	    echo ""
+	    ./bin/gbuild -j ${proc} -m ${mem} --commit bitcoin=${COMMIT} --url bitcoin=${url} ../bitcoin/contrib/gitian-descriptors/gitian-linux.yml
+	    ./bin/gsign -p $signProg --signer $SIGNER --release ${VERSION}-linux --destination ../gitian.sigs/ ../bitcoin/contrib/gitian-descriptors/gitian-linux.yml
+	    mv build/out/bitcoin-*.tar.gz build/out/src/bitcoin-*.tar.gz ../bitcoin-binaries/${VERSION}
+	fi
+	# Windows
+	if [[ $windows = true ]]
+	then
+	    echo ""
+	    echo "Compiling ${VERSION} Windows"
+	    echo ""
+	    ./bin/gbuild -j ${proc} -m ${mem} --commit bitcoin=${COMMIT} --url bitcoin=${url} ../bitcoin/contrib/gitian-descriptors/gitian-win.yml
+	    ./bin/gsign -p $signProg --signer $SIGNER --release ${VERSION}-win-unsigned --destination ../gitian.sigs/ ../bitcoin/contrib/gitian-descriptors/gitian-win.yml
+	    mv build/out/bitcoin-*-win-unsigned.tar.gz inputs/bitcoin-win-unsigned.tar.gz
+	    mv build/out/bitcoin-*.zip build/out/bitcoin-*.exe ../bitcoin-binaries/${VERSION}
+	fi
+	# Mac OSX
+	if [[ $osx = true ]]
+	then
+	    echo ""
+	    echo "Compiling ${VERSION} Mac OSX"
+	    echo ""
+	    ./bin/gbuild -j ${proc} -m ${mem} --commit bitcoin=${COMMIT} --url bitcoin=${url} ../bitcoin/contrib/gitian-descriptors/gitian-osx.yml
+	    ./bin/gsign -p $signProg --signer $SIGNER --release ${VERSION}-osx-unsigned --destination ../gitian.sigs/ ../bitcoin/contrib/gitian-descriptors/gitian-osx.yml
+	    mv build/out/bitcoin-*-osx-unsigned.tar.gz inputs/bitcoin-osx-unsigned.tar.gz
+	    mv build/out/bitcoin-*.tar.gz build/out/bitcoin-*.dmg ../bitcoin-binaries/${VERSION}
+	fi
+	popd
+
+        if [[ $commitFiles = true ]]
+        then
+	    # Commit to gitian.sigs repo
+            echo ""
+            echo "Committing ${VERSION} Unsigned Sigs"
+            echo ""
+            pushd gitian.sigs
+            git add ${VERSION}-linux/${SIGNER}
+            git add ${VERSION}-win-unsigned/${SIGNER}
+            git add ${VERSION}-osx-unsigned/${SIGNER}
+            git commit -a -m "Add ${VERSION} unsigned sigs for ${SIGNER}"
+            popd
+        fi
+fi
+
+# Verify the build
+if [[ $verify = true ]]
+then
+	# Linux
+	pushd ./gitian-builder
+	echo ""
+	echo "Verifying v${VERSION} Linux"
+	echo ""
+	./bin/gverify -v -d ../gitian.sigs/ -r ${VERSION}-linux ../bitcoin/contrib/gitian-descriptors/gitian-linux.yml
+	# Windows
+	echo ""
+	echo "Verifying v${VERSION} Windows"
+	echo ""
+	./bin/gverify -v -d ../gitian.sigs/ -r ${VERSION}-win-unsigned ../bitcoin/contrib/gitian-descriptors/gitian-win.yml
+	# Mac OSX	
+	echo ""
+	echo "Verifying v${VERSION} Mac OSX"
+	echo ""	
+	./bin/gverify -v -d ../gitian.sigs/ -r ${VERSION}-osx-unsigned ../bitcoin/contrib/gitian-descriptors/gitian-osx.yml
+	# Signed Windows
+	echo ""
+	echo "Verifying v${VERSION} Signed Windows"
+	echo ""
+	./bin/gverify -v -d ../gitian.sigs/ -r ${VERSION}-osx-signed ../bitcoin/contrib/gitian-descriptors/gitian-osx-signer.yml
+	# Signed Mac OSX
+	echo ""
+	echo "Verifying v${VERSION} Signed Mac OSX"
+	echo ""
+	./bin/gverify -v -d ../gitian.sigs/ -r ${VERSION}-osx-signed ../bitcoin/contrib/gitian-descriptors/gitian-osx-signer.yml	
+	popd
+fi
+
+# Sign binaries
+if [[ $sign = true ]]
+then
+	
+        pushd ./gitian-builder
+	# Sign Windows
+	if [[ $windows = true ]]
+	then
+	    echo ""
+	    echo "Signing ${VERSION} Windows"
+	    echo ""
+	    ./bin/gbuild -i --commit signature=${COMMIT} ../bitcoin/contrib/gitian-descriptors/gitian-win-signer.yml
+	    ./bin/gsign -p $signProg --signer $SIGNER --release ${VERSION}-win-signed --destination ../gitian.sigs/ ../bitcoin/contrib/gitian-descriptors/gitian-win-signer.yml
+	    mv build/out/bitcoin-*win64-setup.exe ../bitcoin-binaries/${VERSION}
+	    mv build/out/bitcoin-*win32-setup.exe ../bitcoin-binaries/${VERSION}
+	fi
+	# Sign Mac OSX
+	if [[ $osx = true ]]
+	then
+	    echo ""
+	    echo "Signing ${VERSION} Mac OSX"
+	    echo ""
+	    ./bin/gbuild -i --commit signature=${COMMIT} ../bitcoin/contrib/gitian-descriptors/gitian-osx-signer.yml
+	    ./bin/gsign -p $signProg --signer $SIGNER --release ${VERSION}-osx-signed --destination ../gitian.sigs/ ../bitcoin/contrib/gitian-descriptors/gitian-osx-signer.yml
+	    mv build/out/bitcoin-osx-signed.dmg ../bitcoin-binaries/${VERSION}/bitcoin-${VERSION}-osx.dmg
+	fi
+	popd
+
+        if [[ $commitFiles = true ]]
+        then
+            # Commit Sigs
+            pushd gitian.sigs
+            echo ""
+            echo "Committing ${VERSION} Signed Sigs"
+            echo ""
+            git add ${VERSION}-win-signed/${SIGNER}
+            git add ${VERSION}-osx-signed/${SIGNER}
+            git commit -a -m "Add ${VERSION} signed binary sigs for ${SIGNER}"
+            popd
+        fi
+fi
--- a/contrib/gitian-descriptors/README.md
+++ b/contrib/gitian-descriptors/README.md
@@ -1,65 +0,0 @@
-### Gavin's notes on getting gitian builds up and running using KVM
-
-These instructions distilled from
-[https://help.ubuntu.com/community/KVM/Installation](https://help.ubuntu.com/community/KVM/Installation).
-
-You need the right hardware: you need a 64-bit-capable CPU with hardware virtualization support (Intel VT-x or AMD-V). Not all modern CPUs support hardware virtualization.
-
-You probably need to enable hardware virtualization in your machine's BIOS.
-
-You need to be running a recent version of 64-bit-Ubuntu, and you need to install several prerequisites:
-
-	sudo apt-get install ruby apache2 git apt-cacher-ng python-vm-builder qemu-kvm
-
-Sanity checks:
-
-	sudo service apt-cacher-ng status  # Should return apt-cacher-ng is running
-	ls -l /dev/kvm   # Should show a /dev/kvm device
-
-
-Once you've got the right hardware and software:
-
-    git clone git://github.com/bitcoin/bitcoin.git
-    git clone git://github.com/devrandom/gitian-builder.git
-    mkdir gitian-builder/inputs
-    cd gitian-builder/inputs
-
-    # Create base images
-    cd gitian-builder
-    bin/make-base-vm --suite trusty --arch amd64
-    cd ..
-
-    # Get inputs (see doc/release-process.md for exact inputs needed and where to get them)
-    ...
-
-    # For further build instructions see doc/release-process.md
-    ...
-
---------------------
-
-`gitian-builder` now also supports building using LXC. See
-[help.ubuntu.com](https://help.ubuntu.com/14.04/serverguide/lxc.html)
-for how to get LXC up and running under Ubuntu.
-
-If your main machine is a 64-bit Mac or PC with a few gigabytes of memory
-and at least 10 gigabytes of free disk space, you can `gitian-build` using
-LXC running inside a virtual machine.
-
-Here's a description of Gavin's setup on OSX 10.6:
-
-1. Download and install VirtualBox from [https://www.virtualbox.org/](https://www.virtualbox.org/)
-
-2. Download the 64-bit Ubuntu Desktop 12.04 LTS .iso CD image from
-   [http://www.ubuntu.com/](http://www.ubuntu.com/)
-
-3. Run VirtualBox and create a new virtual machine, using the Ubuntu .iso (see the [VirtualBox documentation](https://www.virtualbox.org/wiki/Documentation) for details). Create it with at least 2 gigabytes of memory and a disk that is at least 20 gigabytes big.
-
-4. Inside the running Ubuntu desktop, install:
-
-	sudo apt-get install debootstrap lxc ruby apache2 git apt-cacher-ng python-vm-builder
-
-5. Still inside Ubuntu, tell gitian-builder to use LXC, then follow the "Once you've got the right hardware and software" instructions above:
-
-	export USE_LXC=1
-	git clone git://github.com/bitcoin/bitcoin.git
-	... etc
--- a/contrib/gitian-descriptors/gitian-linux.yml
+++ b/contrib/gitian-descriptors/gitian-linux.yml
@@ -1,12 +1,23 @@
 ---
-name: "bitcoin-linux-0.12"
+name: "bitcoin-linux-0.16"
 enable_cache: true
 suites:
 - "trusty"
 architectures:
 - "amd64"
-packages: 
- "g++-multilib"
+packages:
+- "curl"
+- "g++-aarch64-linux-gnu"
+- "g++-4.8-aarch64-linux-gnu"
+- "gcc-4.8-aarch64-linux-gnu"
+- "binutils-aarch64-linux-gnu"
+- "g++-arm-linux-gnueabihf"
+- "g++-4.8-arm-linux-gnueabihf"
+- "gcc-4.8-arm-linux-gnueabihf"
+- "binutils-arm-linux-gnueabihf"
+- "g++-4.8-multilib"
+- "gcc-4.8-multilib"
+- "binutils-gold"
 - "git-core"
 - "pkg-config"
 - "autoconf"
@@ -14,18 +25,22 @@ packages:
 - "automake"
 - "faketime"
 - "bsdmainutils"
- "binutils-gold"
-reference_datetime: "2015-06-01 00:00:00"
+- "ca-certificates"
+- "python"
 remotes:
 - "url": "https://github.com/bitcoin/bitcoin.git"
  "dir": "bitcoin"
 files: []
 script: |
+
  WRAP_DIR=$HOME/wrapped
-  HOSTS="i686-pc-linux-gnu x86_64-unknown-linux-gnu"
-  CONFIGFLAGS="--enable-glibc-back-compat --enable-reduce-exports LDFLAGS=-static-libstdc++"
+  HOSTS="i686-pc-linux-gnu x86_64-linux-gnu arm-linux-gnueabihf aarch64-linux-gnu"
+  CONFIGFLAGS="--enable-glibc-back-compat --enable-reduce-exports --disable-bench --disable-gui-tests"
  FAKETIME_HOST_PROGS=""
-  FAKETIME_PROGS="date ar ranlib nm strip"
+  FAKETIME_PROGS="date ar ranlib nm"
+  HOST_CFLAGS="-O2 -g"
+  HOST_CXXFLAGS="-O2 -g"
+  HOST_LDFLAGS=-static-libstdc++

  export QT_RCC_TEST=1
  export GZIP="-9n"
@@ -39,39 +54,86 @@ script: |
    mkdir -p ${BASE_CACHE} ${SOURCES_PATH}
  fi

-  # Create global faketime wrappers
+  function create_global_faketime_wrappers {
  for prog in ${FAKETIME_PROGS}; do
    echo '#!/bin/bash' > ${WRAP_DIR}/${prog}
    echo "REAL=\`which -a ${prog} | grep -v ${WRAP_DIR}/${prog} | head -1\`" >> ${WRAP_DIR}/${prog}
    echo 'export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/faketime/libfaketime.so.1' >> ${WRAP_DIR}/${prog}
-    echo "export FAKETIME=\"${REFERENCE_DATETIME}\"" >> ${WRAP_DIR}/${prog}
+    echo "export FAKETIME=\"$1\"" >> ${WRAP_DIR}/${prog}
    echo "\$REAL \$@" >> $WRAP_DIR/${prog}
    chmod +x ${WRAP_DIR}/${prog}
  done
+  }

-  # Create per-host faketime wrappers
+  function create_per-host_faketime_wrappers {
  for i in $HOSTS; do
    for prog in ${FAKETIME_HOST_PROGS}; do
        echo '#!/bin/bash' > ${WRAP_DIR}/${i}-${prog}
        echo "REAL=\`which -a ${i}-${prog} | grep -v ${WRAP_DIR}/${i}-${prog} | head -1\`" >> ${WRAP_DIR}/${i}-${prog}
        echo 'export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/faketime/libfaketime.so.1' >> ${WRAP_DIR}/${i}-${prog}
-        echo "export FAKETIME=\"${REFERENCE_DATETIME}\"" >> ${WRAP_DIR}/${i}-${prog}
+        echo "export FAKETIME=\"$1\"" >> ${WRAP_DIR}/${i}-${prog}
        echo "\$REAL \$@" >> $WRAP_DIR/${i}-${prog}
        chmod +x ${WRAP_DIR}/${i}-${prog}
    done
  done
+  }
+
+  # Faketime for depends so intermediate results are comparable
+  export PATH_orig=${PATH}
+  create_global_faketime_wrappers "2000-01-01 12:00:00"
+  create_per-host_faketime_wrappers "2000-01-01 12:00:00"
  export PATH=${WRAP_DIR}:${PATH}

+  EXTRA_INCLUDES_BASE=$WRAP_DIR/extra_includes
+  mkdir -p $EXTRA_INCLUDES_BASE
+
+  # x86 needs /usr/include/i386-linux-gnu/asm pointed to /usr/include/x86_64-linux-gnu/asm,
+  # but we can't write there. Instead, create a link here and force it to be included in the
+  # search paths by wrapping gcc/g++.
+
+  mkdir -p $EXTRA_INCLUDES_BASE/i686-pc-linux-gnu
+  rm -f $WRAP_DIR/extra_includes/i686-pc-linux-gnu/asm
+  ln -s /usr/include/x86_64-linux-gnu/asm $EXTRA_INCLUDES_BASE/i686-pc-linux-gnu/asm
+
+  for prog in gcc g++; do
+  rm -f ${WRAP_DIR}/${prog}
+  cat << EOF > ${WRAP_DIR}/${prog}
+  #!/bin/bash
+  REAL="`which -a ${prog} | grep -v ${WRAP_DIR}/${prog} | head -1`"
+  for var in "\$@"
+  do
+    if [ "\$var" = "-m32" ]; then
+      export C_INCLUDE_PATH="$EXTRA_INCLUDES_BASE/i686-pc-linux-gnu"
+      export CPLUS_INCLUDE_PATH="$EXTRA_INCLUDES_BASE/i686-pc-linux-gnu"
+      break
+    fi
+  done
+  \$REAL \$@
+  EOF
+  chmod +x ${WRAP_DIR}/${prog}
+  done
+
  cd bitcoin
  BASEPREFIX=`pwd`/depends
  # Build dependencies for each host
  for i in $HOSTS; do
+    EXTRA_INCLUDES="$EXTRA_INCLUDES_BASE/$i"
+    if [ -d "$EXTRA_INCLUDES" ]; then
+      export HOST_ID_SALT="$EXTRA_INCLUDES"
+    fi
    make ${MAKEOPTS} -C ${BASEPREFIX} HOST="${i}"
+    unset HOST_ID_SALT
  done

+  # Faketime for binaries
+  export PATH=${PATH_orig}
+  create_global_faketime_wrappers "${REFERENCE_DATETIME}"
+  create_per-host_faketime_wrappers "${REFERENCE_DATETIME}"
+  export PATH=${WRAP_DIR}:${PATH}
+
  # Create the release tarball using (arbitrarily) the first host
  ./autogen.sh
-  ./configure --prefix=${BASEPREFIX}/`echo "${HOSTS}" | awk '{print $1;}'`
+  CONFIG_SITE=${BASEPREFIX}/`echo "${HOSTS}" | awk '{print $1;}'`/share/config.site ./configure --prefix=/
  make dist
  SOURCEDIST=`echo bitcoin-*.tar.gz`
  DISTNAME=`echo ${SOURCEDIST} | sed 's/.tar.*//'`
@@ -82,6 +144,9 @@ script: |
  find bitcoin-* | sort | tar --no-recursion --mode='u+rw,go+r-w,a+X' --owner=0 --group=0 -c -T - | gzip -9n > ../$SOURCEDIST
  popd

+  # Workaround for tarball not building with the bare tag version (prep)
+  make -C src obj/build.h
+
  ORIGPATH="$PATH"
  # Extract the release tarball into a dir for each host and build
  for i in ${HOSTS}; do
@@ -92,18 +157,36 @@ script: |
    mkdir -p ${INSTALLPATH}
    tar --strip-components=1 -xf ../$SOURCEDIST

-    ./configure --prefix=${BASEPREFIX}/${i} --bindir=${INSTALLPATH}/bin --includedir=${INSTALLPATH}/include --libdir=${INSTALLPATH}/lib --disable-ccache --disable-maintainer-mode --disable-dependency-tracking ${CONFIGFLAGS}
+    # Workaround for tarball not building with the bare tag version
+    echo '#!/bin/true' >share/genbuild.sh
+    mkdir src/obj
+    cp ../src/obj/build.h src/obj/
+
+    CONFIG_SITE=${BASEPREFIX}/${i}/share/config.site ./configure --prefix=/ --disable-ccache --disable-maintainer-mode --disable-dependency-tracking ${CONFIGFLAGS} CFLAGS="${HOST_CFLAGS}" CXXFLAGS="${HOST_CXXFLAGS}" LDFLAGS="${HOST_LDFLAGS}"
    make ${MAKEOPTS}
-    make install-strip
+    make ${MAKEOPTS} -C src check-security
+
+    #TODO: This is a quick hack that disables symbol checking for arm.
+    #      Instead, we should investigate why these are popping up.
+    #      For aarch64, we'll need to bump up the min GLIBC version, as the abi
+    #      support wasn't introduced until 2.17.
+    case $i in
+       aarch64-*) : ;;
+       arm-*) : ;;
+       *) make ${MAKEOPTS} -C src check-symbols ;;
+    esac
+
+    make install DESTDIR=${INSTALLPATH}
    cd installed
    find . -name "lib*.la" -delete
    find . -name "lib*.a" -delete
    rm -rf ${DISTNAME}/lib/pkgconfig
-    find ${DISTNAME} | sort | tar --no-recursion --mode='u+rw,go+r-w,a+X' --owner=0 --group=0 -c -T - | gzip -9n > ${OUTDIR}/${DISTNAME}-${i}.tar.gz
+    find ${DISTNAME}/bin -type f -executable -exec ../contrib/devtools/split-debug.sh {} {} {}.dbg \;
+    find ${DISTNAME}/lib -type f -exec ../contrib/devtools/split-debug.sh {} {} {}.dbg \;
+    find ${DISTNAME} -not -name "*.dbg" | sort | tar --no-recursion --mode='u+rw,go+r-w,a+X' --owner=0 --group=0 -c -T - | gzip -9n > ${OUTDIR}/${DISTNAME}-${i}.tar.gz
+    find ${DISTNAME} -name "*.dbg" | sort | tar --no-recursion --mode='u+rw,go+r-w,a+X' --owner=0 --group=0 -c -T - | gzip -9n > ${OUTDIR}/${DISTNAME}-${i}-debug.tar.gz
    cd ../../
+    rm -rf distsrc-${i}
  done
  mkdir -p $OUTDIR/src
  mv $SOURCEDIST $OUTDIR/src
-  mv ${OUTDIR}/${DISTNAME}-x86_64-*.tar.gz ${OUTDIR}/${DISTNAME}-linux64.tar.gz
-  mv ${OUTDIR}/${DISTNAME}-i686-*.tar.gz ${OUTDIR}/${DISTNAME}-linux32.tar.gz
-
--- a/contrib/gitian-descriptors/gitian-osx-signer.yml
+++ b/contrib/gitian-descriptors/gitian-osx-signer.yml
@@ -5,11 +5,9 @@ suites:
 architectures:
 - "amd64"
 packages:
- "libc6:i386"
 - "faketime"
-reference_datetime: "2015-06-01 00:00:00"
 remotes:
- "url": "https://github.com/bitcoin/bitcoin-detached-sigs.git"
+- "url": "https://github.com/bitcoin-core/bitcoin-detached-sigs.git"
  "dir": "signature"
 files:
 - "bitcoin-osx-unsigned.tar.gz"
@@ -33,6 +31,7 @@ script: |
  SIGNED=bitcoin-osx-signed.dmg

  tar -xf ${UNSIGNED}
+  OSX_VOLNAME="$(cat osx_volname)"
  ./detached-sig-apply.sh ${UNSIGNED} signature/osx
-  ${WRAP_DIR}/genisoimage -no-cache-inodes -D -l -probe -V "Bitcoin-Core" -no-pad -r -apple -o uncompressed.dmg signed-app
+  ${WRAP_DIR}/genisoimage -no-cache-inodes -D -l -probe -V "${OSX_VOLNAME}" -no-pad -r -dir-mode 0755 -apple -o uncompressed.dmg signed-app
  ${WRAP_DIR}/dmg dmg uncompressed.dmg ${OUTDIR}/${SIGNED}
--- a/contrib/gitian-descriptors/gitian-osx.yml
+++ b/contrib/gitian-descriptors/gitian-osx.yml
@@ -1,33 +1,41 @@
 ---
-name: "bitcoin-osx-0.12"
+name: "bitcoin-osx-0.16"
 enable_cache: true
 suites:
 - "trusty"
 architectures:
 - "amd64"
-packages: 
+packages:
+- "ca-certificates"
+- "curl"
 - "g++"
 - "git-core"
 - "pkg-config"
 - "autoconf"
+- "librsvg2-bin"
+- "libtiff-tools"
 - "libtool"
 - "automake"
 - "faketime"
 - "bsdmainutils"
 - "cmake"
+- "imagemagick"
 - "libcap-dev"
 - "libz-dev"
 - "libbz2-dev"
-reference_datetime: "2015-06-01 00:00:00"
+- "python"
+- "python-dev"
+- "python-setuptools"
+- "fonts-tuffy"
 remotes:
 - "url": "https://github.com/bitcoin/bitcoin.git"
  "dir": "bitcoin"
 files:
- "MacOSX10.9.sdk.tar.gz"
+- "MacOSX10.11.sdk.tar.gz"
 script: |
  WRAP_DIR=$HOME/wrapped
  HOSTS="x86_64-apple-darwin11"
-  CONFIGFLAGS="--enable-reduce-exports GENISOIMAGE=$WRAP_DIR/genisoimage"
+  CONFIGFLAGS="--enable-reduce-exports --disable-bench --disable-gui-tests GENISOIMAGE=$WRAP_DIR/genisoimage"
  FAKETIME_HOST_PROGS=""
  FAKETIME_PROGS="ar ranlib date dmg genisoimage"

@@ -45,43 +53,56 @@ script: |

  export ZERO_AR_DATE=1

-  # Create global faketime wrappers
+  function create_global_faketime_wrappers {
  for prog in ${FAKETIME_PROGS}; do
    echo '#!/bin/bash' > ${WRAP_DIR}/${prog}
    echo "REAL=\`which -a ${prog} | grep -v ${WRAP_DIR}/${prog} | head -1\`" >> ${WRAP_DIR}/${prog}
    echo 'export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/faketime/libfaketime.so.1' >> ${WRAP_DIR}/${prog}
-    echo "export FAKETIME=\"${REFERENCE_DATETIME}\"" >> ${WRAP_DIR}/${prog}
+    echo "export FAKETIME=\"$1\"" >> ${WRAP_DIR}/${prog}
    echo "\$REAL \$@" >> $WRAP_DIR/${prog}
    chmod +x ${WRAP_DIR}/${prog}
  done
+  }

-  # Create per-host faketime wrappers
+  function create_per-host_faketime_wrappers {
  for i in $HOSTS; do
    for prog in ${FAKETIME_HOST_PROGS}; do
        echo '#!/bin/bash' > ${WRAP_DIR}/${i}-${prog}
        echo "REAL=\`which -a ${i}-${prog} | grep -v ${WRAP_DIR}/${i}-${prog} | head -1\`" >> ${WRAP_DIR}/${i}-${prog}
        echo 'export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/faketime/libfaketime.so.1' >> ${WRAP_DIR}/${i}-${prog}
-        echo "export FAKETIME=\"${REFERENCE_DATETIME}\"" >> ${WRAP_DIR}/${i}-${prog}
+        echo "export FAKETIME=\"$1\"" >> ${WRAP_DIR}/${i}-${prog}
        echo "\$REAL \$@" >> $WRAP_DIR/${i}-${prog}
        chmod +x ${WRAP_DIR}/${i}-${prog}
    done
  done
+  }
+
+  # Faketime for depends so intermediate results are comparable
+  export PATH_orig=${PATH}
+  create_global_faketime_wrappers "2000-01-01 12:00:00"
+  create_per-host_faketime_wrappers "2000-01-01 12:00:00"
  export PATH=${WRAP_DIR}:${PATH}

  cd bitcoin
  BASEPREFIX=`pwd`/depends

  mkdir -p ${BASEPREFIX}/SDKs
-  tar -C ${BASEPREFIX}/SDKs -xf ${BUILD_DIR}/MacOSX10.9.sdk.tar.gz
+  tar -C ${BASEPREFIX}/SDKs -xf ${BUILD_DIR}/MacOSX10.11.sdk.tar.gz

  # Build dependencies for each host
  for i in $HOSTS; do
    make ${MAKEOPTS} -C ${BASEPREFIX} HOST="${i}"
  done

+  # Faketime for binaries
+  export PATH=${PATH_orig}
+  create_global_faketime_wrappers "${REFERENCE_DATETIME}"
+  create_per-host_faketime_wrappers "${REFERENCE_DATETIME}"
+  export PATH=${WRAP_DIR}:${PATH}
+
  # Create the release tarball using (arbitrarily) the first host
  ./autogen.sh
-  ./configure --prefix=${BASEPREFIX}/`echo "${HOSTS}" | awk '{print $1;}'`
+  CONFIG_SITE=${BASEPREFIX}/`echo "${HOSTS}" | awk '{print $1;}'`/share/config.site ./configure --prefix=/
  make dist
  SOURCEDIST=`echo bitcoin-*.tar.gz`
  DISTNAME=`echo ${SOURCEDIST} | sed 's/.tar.*//'`
@@ -93,6 +114,9 @@ script: |
  find bitcoin-* | sort | tar --no-recursion --mode='u+rw,go+r-w,a+X' --owner=0 --group=0 -c -T - | gzip -9n > ../$SOURCEDIST
  popd

+  # Workaround for tarball not building with the bare tag version (prep)
+  make -C src obj/build.h
+
  ORIGPATH="$PATH"
  # Extract the release tarball into a dir for each host and build
  for i in ${HOSTS}; do
@@ -103,12 +127,20 @@ script: |
    mkdir -p ${INSTALLPATH}
    tar --strip-components=1 -xf ../$SOURCEDIST

-    ./configure --prefix=${BASEPREFIX}/${i} --bindir=${INSTALLPATH}/bin --includedir=${INSTALLPATH}/include --libdir=${INSTALLPATH}/lib --disable-ccache --disable-maintainer-mode --disable-dependency-tracking ${CONFIGFLAGS}
-    make ${MAKEOPTS}
-    make install-strip
+    # Workaround for tarball not building with the bare tag version
+    echo '#!/bin/true' >share/genbuild.sh
+    mkdir src/obj
+    cp ../src/obj/build.h src/obj/

+    CONFIG_SITE=${BASEPREFIX}/${i}/share/config.site ./configure --prefix=/ --disable-ccache --disable-maintainer-mode --disable-dependency-tracking ${CONFIGFLAGS}
+    make ${MAKEOPTS}
+    make install-strip DESTDIR=${INSTALLPATH}
+
+    make osx_volname
    make deploydir
+    OSX_VOLNAME="$(cat osx_volname)"
    mkdir -p unsigned-app-${i}
+    cp osx_volname unsigned-app-${i}/
    cp contrib/macdeploy/detached-sig-apply.sh unsigned-app-${i}
    cp contrib/macdeploy/detached-sig-create.sh unsigned-app-${i}
    cp ${BASEPREFIX}/${i}/native/bin/dmg ${BASEPREFIX}/${i}/native/bin/genisoimage unsigned-app-${i}
@@ -120,7 +152,7 @@ script: |
    popd

    make deploy
-    ${WRAP_DIR}/dmg dmg Bitcoin-Core.dmg ${OUTDIR}/${DISTNAME}-osx-unsigned.dmg
+    ${WRAP_DIR}/dmg dmg "${OSX_VOLNAME}.dmg" ${OUTDIR}/${DISTNAME}-osx-unsigned.dmg

    cd installed
    find . -name "lib*.la" -delete
--- a/contrib/gitian-descriptors/gitian-win-signer.yml
+++ b/contrib/gitian-descriptors/gitian-win-signer.yml
@@ -7,9 +7,8 @@ architectures:
 packages:
 - "libssl-dev"
 - "autoconf"
-reference_datetime: "2015-06-01 00:00:00"
 remotes:
- "url": "https://github.com/bitcoin/bitcoin-detached-sigs.git"
+- "url": "https://github.com/bitcoin-core/bitcoin-detached-sigs.git"
  "dir": "signature"
 files:
 - "osslsigncode-1.7.1.tar.gz"
--- a/contrib/gitian-descriptors/gitian-win.yml
+++ b/contrib/gitian-descriptors/gitian-win.yml
@@ -1,11 +1,12 @@
 ---
-name: "bitcoin-win-0.12"
+name: "bitcoin-win-0.16"
 enable_cache: true
 suites:
 - "trusty"
 architectures:
 - "amd64"
-packages: 
+packages:
+- "curl"
 - "g++"
 - "git-core"
 - "pkg-config"
@@ -18,17 +19,20 @@ packages:
 - "g++-mingw-w64"
 - "nsis"
 - "zip"
-reference_datetime: "2015-06-01 00:00:00"
+- "ca-certificates"
+- "python"
 remotes:
 - "url": "https://github.com/bitcoin/bitcoin.git"
  "dir": "bitcoin"
 files: []
 script: |
  WRAP_DIR=$HOME/wrapped
-  HOSTS="x86_64-w64-mingw32 i686-w64-mingw32"
-  CONFIGFLAGS="--enable-reduce-exports"
-  FAKETIME_HOST_PROGS="g++ ar ranlib nm windres strip"
+  HOSTS="i686-w64-mingw32 x86_64-w64-mingw32"
+  CONFIGFLAGS="--enable-reduce-exports --disable-bench --disable-gui-tests"
+  FAKETIME_HOST_PROGS="g++ ar ranlib nm windres strip objcopy"
  FAKETIME_PROGS="date makensis zip"
+  HOST_CFLAGS="-O2 -g"
+  HOST_CXXFLAGS="-O2 -g"

  export QT_RCC_TEST=1
  export GZIP="-9n"
@@ -42,29 +46,31 @@ script: |
    mkdir -p ${BASE_CACHE} ${SOURCES_PATH}
  fi

-  # Create global faketime wrappers
+  function create_global_faketime_wrappers {
  for prog in ${FAKETIME_PROGS}; do
    echo '#!/bin/bash' > ${WRAP_DIR}/${prog}
    echo "REAL=\`which -a ${prog} | grep -v ${WRAP_DIR}/${prog} | head -1\`" >> ${WRAP_DIR}/${prog}
    echo 'export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/faketime/libfaketime.so.1' >> ${WRAP_DIR}/${prog}
-    echo "export FAKETIME=\"${REFERENCE_DATETIME}\"" >> ${WRAP_DIR}/${prog}
+    echo "export FAKETIME=\"$1\"" >> ${WRAP_DIR}/${prog}
    echo "\$REAL \$@" >> $WRAP_DIR/${prog}
    chmod +x ${WRAP_DIR}/${prog}
  done
+  }

-  # Create per-host faketime wrappers
+  function create_per-host_faketime_wrappers {
  for i in $HOSTS; do
    for prog in ${FAKETIME_HOST_PROGS}; do
        echo '#!/bin/bash' > ${WRAP_DIR}/${i}-${prog}
        echo "REAL=\`which -a ${i}-${prog} | grep -v ${WRAP_DIR}/${i}-${prog} | head -1\`" >> ${WRAP_DIR}/${i}-${prog}
        echo 'export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/faketime/libfaketime.so.1' >> ${WRAP_DIR}/${i}-${prog}
-        echo "export FAKETIME=\"${REFERENCE_DATETIME}\"" >> ${WRAP_DIR}/${i}-${prog}
+        echo "export FAKETIME=\"$1\"" >> ${WRAP_DIR}/${i}-${prog}
        echo "\$REAL \$@" >> $WRAP_DIR/${i}-${prog}
        chmod +x ${WRAP_DIR}/${i}-${prog}
    done
  done
+  }

-  # Create per-host linker wrapper
+  function create_per-host_linker_wrapper {
  # This is only needed for trusty, as the mingw linker leaks a few bytes of
  # heap, causing non-determinism. See discussion in https://github.com/bitcoin/bitcoin/pull/6900
  for i in $HOSTS; do
@@ -80,13 +86,19 @@ script: |
        echo '#!/bin/bash' > ${WRAP_DIR}/${i}-${prog}
        echo "REAL=\`which -a ${i}-${prog} | grep -v ${WRAP_DIR}/${i}-${prog} | head -1\`" >> ${WRAP_DIR}/${i}-${prog}
        echo 'export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/faketime/libfaketime.so.1' >> ${WRAP_DIR}/${i}-${prog}
-        echo "export FAKETIME=\"${REFERENCE_DATETIME}\"" >> ${WRAP_DIR}/${i}-${prog}
+        echo "export FAKETIME=\"$1\"" >> ${WRAP_DIR}/${i}-${prog}
        echo "export COMPILER_PATH=${WRAP_DIR}/${i}" >> ${WRAP_DIR}/${i}-${prog}
        echo "\$REAL \$@" >> $WRAP_DIR/${i}-${prog}
        chmod +x ${WRAP_DIR}/${i}-${prog}
    done
  done
+  }

+  # Faketime for depends so intermediate results are comparable
+  export PATH_orig=${PATH}
+  create_global_faketime_wrappers "2000-01-01 12:00:00"
+  create_per-host_faketime_wrappers "2000-01-01 12:00:00"
+  create_per-host_linker_wrapper "2000-01-01 12:00:00"
  export PATH=${WRAP_DIR}:${PATH}

  cd bitcoin
@@ -96,9 +108,16 @@ script: |
    make ${MAKEOPTS} -C ${BASEPREFIX} HOST="${i}"
  done

+  # Faketime for binaries
+  export PATH=${PATH_orig}
+  create_global_faketime_wrappers "${REFERENCE_DATETIME}"
+  create_per-host_faketime_wrappers "${REFERENCE_DATETIME}"
+  create_per-host_linker_wrapper "${REFERENCE_DATETIME}"
+  export PATH=${WRAP_DIR}:${PATH}
+
  # Create the release tarball using (arbitrarily) the first host
  ./autogen.sh
-  ./configure --prefix=${BASEPREFIX}/`echo "${HOSTS}" | awk '{print $1;}'`
+  CONFIG_SITE=${BASEPREFIX}/`echo "${HOSTS}" | awk '{print $1;}'`/share/config.site ./configure --prefix=/
  make dist
  SOURCEDIST=`echo bitcoin-*.tar.gz`
  DISTNAME=`echo ${SOURCEDIST} | sed 's/.tar.*//'`
@@ -112,6 +131,9 @@ script: |
  cp ../$SOURCEDIST $OUTDIR/src
  popd

+  # Workaround for tarball not building with the bare tag version (prep)
+  make -C src obj/build.h
+
  ORIGPATH="$PATH"
  # Extract the release tarball into a dir for each host and build
  for i in ${HOSTS}; do
@@ -122,21 +144,36 @@ script: |
    mkdir -p ${INSTALLPATH}
    tar --strip-components=1 -xf ../$SOURCEDIST

-    ./configure --prefix=${BASEPREFIX}/${i} --bindir=${INSTALLPATH}/bin --includedir=${INSTALLPATH}/include --libdir=${INSTALLPATH}/lib --disable-ccache --disable-maintainer-mode --disable-dependency-tracking ${CONFIGFLAGS}
+    # Workaround for tarball not building with the bare tag version
+    echo '#!/bin/true' >share/genbuild.sh
+    mkdir src/obj
+    cp ../src/obj/build.h src/obj/
+
+    CONFIG_SITE=${BASEPREFIX}/${i}/share/config.site ./configure --prefix=/ --disable-ccache --disable-maintainer-mode --disable-dependency-tracking ${CONFIGFLAGS} CFLAGS="${HOST_CFLAGS}" CXXFLAGS="${HOST_CXXFLAGS}"
    make ${MAKEOPTS}
+    make ${MAKEOPTS} -C src check-security
    make deploy
-    make install-strip
+    make install DESTDIR=${INSTALLPATH}
+    rename 's/-setup\.exe$/-setup-unsigned.exe/' *-setup.exe
    cp -f bitcoin-*setup*.exe $OUTDIR/
    cd installed
    mv ${DISTNAME}/bin/*.dll ${DISTNAME}/lib/
    find . -name "lib*.la" -delete
    find . -name "lib*.a" -delete
    rm -rf ${DISTNAME}/lib/pkgconfig
-    find ${DISTNAME} -type f | sort | zip -X@ ${OUTDIR}/${DISTNAME}-${i}.zip
-    cd ../..
+    find ${DISTNAME}/bin -type f -executable -exec ${i}-objcopy --only-keep-debug {} {}.dbg \; -exec ${i}-strip -s {} \; -exec ${i}-objcopy --add-gnu-debuglink={}.dbg {} \;
+    find ${DISTNAME}/lib -type f -exec ${i}-objcopy --only-keep-debug {} {}.dbg \; -exec ${i}-strip -s {} \; -exec ${i}-objcopy --add-gnu-debuglink={}.dbg {} \;
+    find ${DISTNAME} -not -name "*.dbg"  -type f | sort | zip -X@ ${OUTDIR}/${DISTNAME}-${i}.zip
+    find ${DISTNAME} -name "*.dbg"  -type f | sort | zip -X@ ${OUTDIR}/${DISTNAME}-${i}-debug.zip
+    cd ../../
+    rm -rf distsrc-${i}
  done
-  cd $OUTDIR
-  rename 's/-setup\.exe$/-setup-unsigned.exe/' *-setup.exe
-  find . -name "*-setup-unsigned.exe" | sort | tar --no-recursion --mode='u+rw,go+r-w,a+X' --owner=0 --group=0 -c -T - | gzip -9n > ${OUTDIR}/${DISTNAME}-win-unsigned.tar.gz
+  cp -rf contrib/windeploy $BUILD_DIR
+  cd $BUILD_DIR/windeploy
+  mkdir unsigned
+  cp $OUTDIR/bitcoin-*setup-unsigned.exe unsigned/
+  find . | sort | tar --no-recursion --mode='u+rw,go+r-w,a+X' --owner=0 --group=0 -c -T - | gzip -9n > ${OUTDIR}/${DISTNAME}-win-unsigned.tar.gz
+  mv ${OUTDIR}/${DISTNAME}-x86_64-*-debug.zip ${OUTDIR}/${DISTNAME}-win64-debug.zip
+  mv ${OUTDIR}/${DISTNAME}-i686-*-debug.zip ${OUTDIR}/${DISTNAME}-win32-debug.zip
  mv ${OUTDIR}/${DISTNAME}-x86_64-*.zip ${OUTDIR}/${DISTNAME}-win64.zip
  mv ${OUTDIR}/${DISTNAME}-i686-*.zip ${OUTDIR}/${DISTNAME}-win32.zip
--- a/contrib/gitian-downloader/btcdrak-key.pgp
+++ b/contrib/gitian-downloader/btcdrak-key.pgp
@@ -1,142 +0,0 @@
-----BEGIN PGP PUBLIC KEY BLOCK-----
-Version: GnuPG v2
-
-mQINBFWpKewBEACzsuhtkin1MdQCKCEcFypjEstg0jA0nNVOpsGDTtdwfMpWiLJH
-bV7b3V1p5hgaPdSyZsUezvHbkVEQxmU47C9lwph3svu6v8HInBwnOa5zj4L0Ih18
-7yfeEJOvWzULzNxtiIqvWQBFxrVBbgHMhUMg0j6KCYOWeTmTuUKgvbQB8dExCoV9
-7l+mb0k6eOZhwGWl6KD8mVkdhfXhoCZY5g79BTJf7lAQqnVbjxdyEKD2HSSs5Jnx
-mTeZg40ottXa1puT+x9ES7L/IOY5kcrp6lU8iyKAoUS4vOJt4nPqY59Pr9j2nUak
-2BUY0yojH41a752OYW59R+0uTNcUAwpNFucOb4TrNqjGJaPtxvFBZPTLImfSE+Jj
-VTT6eZixOXPlOWm/7PgR66JF70p3gDwCL19bwUeOKX3UbkjhmYG48d9y1FNFZlVM
-Yf36xj0c2IOz34VVY6GcCfnIN6xus5qWgHWiQ6RRdlRc9TbcCsUGttXuFP/n4nX2
-OHo6I/HBNidLScfD2sXZtYHLcqvi2CcvEmmDdwBZrZncz+cHpjz8xmONb3bEMNT0
-euPcEC5PXUItCSk9KHSgJhAWqfB2WcZ0RUYLp5lbtIZGHqY34LJRWXVKeOQIq4Gn
-8uCyM5oQUY9zK4x7fdRz5tOjInYg+eSqtnLVDACqmazQHZ6kuGspAvwW8QARAQAB
-tBtCdGNEcmFrIDxidGNkcmFrQGdtYWlsLmNvbT6JAj0EEwECACgFAlWpKewCGwEF
-CQWjmoAGCwkIBwMCBhUIAgkKCwQWAgMBAh4BAheAAAoJEOXROPXnOhryKiAP+L3B
-4c4eZcp8OSRwtYMiNmlxqhzEe+Va8T748rP8oULBFi7b7Nw9FILtp0Vtt2Xw9Pd9
-EMsv5ZfgPpFL58ZeaO5f4uyrxipfUE5XdhkMOtqqlTfuCGh5fvNv1sWgf5tOFS2+
-4TCtcSSywl/OlbRmWW/rsJ+RPrE32iSn171WRUXmGGBGSTF2mxCELLIW/rnY1qUw
-u81BN4SYQOSyd1ha4XAlVYnPcEdpD5mBhwh2mdw7nCtJ9G/lPJ+1VT5axsONbEKK
-utoU8CRt7OBlAUe0GbAcp7FcniKaFF2nUuhNbMjFcqZ9pddb6aWHVcaXIHwjoR8T
-Br8ygIoODNEauc0e1xbtsXByD76pcz3yzZOFCKxtjtjsln23Drko4JA2LyLxx8WY
-BCZcf8/8QSZJOocFOoUIHEfdljo/41kF1MF1Ra2Pr5ZHx/qNcI3U+4+uBoc1AuWS
-5gJl6xXicLByqweSGKzAfq+SGXM+8ZdJ5KuHISMq7tfkzkmIJ7fRy+cdprXYVnhK
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-=fFMC
-----END PGP PUBLIC KEY BLOCK-----
--- a/contrib/gitian-downloader/laanwj-key.pgp
+++ b/contrib/gitian-downloader/laanwj-key.pgp
@@ -1,28 +0,0 @@
-----BEGIN PGP PUBLIC KEY BLOCK-----
-Version: SKS 1.1.0
-
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-=si/k
-----END PGP PUBLIC KEY BLOCK-----
--- a/contrib/gitian-downloader/luke-jr-key.pgp
+++ b/contrib/gitian-downloader/luke-jr-key.pgp
--- a/contrib/gitian-keys/README.md
+++ b/contrib/gitian-keys/README.md
@@ -0,0 +1,16 @@
+PGP keys
+========
+
+This folder contains the public keys of developers and active contributors.
+
+The keys are mainly used to sign git commits or the build results of Gitian
+builds.
+
+You can import the keys into gpg as follows. Also, make sure to fetch the
+latest version from the key server to see if any key was revoked in the
+meantime.
+
+```sh
+gpg --import ./*.pgp
+gpg --refresh-keys
+```
--- a/contrib/gitian-keys/achow101-key.pgp
+++ b/contrib/gitian-keys/achow101-key.pgp
@@ -0,0 +1,52 @@
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+Version: GnuPG v1
+
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--- a/contrib/gitian-downloader/aschildbach-key.pgp
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--- a/contrib/gitian-downloader/bluematt-key.pgp
+++ b/contrib/gitian-downloader/bluematt-key.pgp
--- a/contrib/gitian-keys/btcdrak-key.pgp
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--- a/contrib/gitian-downloader/cdecker-key.pgp
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--- a/contrib/gitian-downloader/centaur1-key.pgp
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--- a/contrib/gitian-downloader/cfields-key.pgp
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--- a/contrib/gitian-downloader/devrandom-key.pgp
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--- a/contrib/gitian-downloader/erkmos.pgp
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--- a/contrib/gitian-downloader/fanquake-key.pgp
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--- a/contrib/gitian-downloader/gavinandresen-key.pgp
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--- a/contrib/gitian-keys/jl2012-key.pgp
+++ b/contrib/gitian-keys/jl2012-key.pgp
@@ -0,0 +1,105 @@
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--- a/contrib/gitian-downloader/jonasschnelli-key.pgp
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--- a/contrib/gitian-keys/jtimon-key.pgp
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--- a/contrib/gitian-keys/laanwj-key.pgp
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--- a/contrib/gitian-keys/luke-jr-key.pgp
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--- a/contrib/gitian-keys/marcofalke-key.pgp
+++ b/contrib/gitian-keys/marcofalke-key.pgp
@@ -0,0 +1,69 @@
+-----BEGIN PGP PUBLIC KEY BLOCK-----
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+-----END PGP PUBLIC KEY BLOCK-----
--- a/Show More
+++ b/Show More
				`@@ -0,0 +1 @@`
				`contrib/bitcoin-tx.bash-completion bitcoin-tx`